diff --git a/src/main/antlr/.antlr/VSLLexer.interp b/src/main/antlr/.antlr/VSLLexer.interp
index 870071c..a73b4cb 100644
--- a/src/main/antlr/.antlr/VSLLexer.interp
+++ b/src/main/antlr/.antlr/VSLLexer.interp
@@ -8,6 +8,7 @@ null
 '<'
 '>='
 '>'
+':='
 'IF'
 'THEN'
 'ELSE'
@@ -41,6 +42,7 @@ LE
 LT
 GE
 GT
+ASSIGN
 IF
 THEN
 ELSE
@@ -73,6 +75,7 @@ LE
 LT
 GE
 GT
+ASSIGN
 IF
 THEN
 ELSE
@@ -107,4 +110,4 @@ mode names:
 DEFAULT_MODE
 
 atn:
-[4, 0, 30, 199, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, 7, 15, 2, 16, 7, 16, 2, 17, 7, 17, 2, 18, 7, 18, 2, 19, 7, 19, 2, 20, 7, 20, 2, 21, 7, 21, 2, 22, 7, 22, 2, 23, 7, 23, 2, 24, 7, 24, 2, 25, 7, 25, 2, 26, 7, 26, 2, 27, 7, 27, 2, 28, 7, 28, 2, 29, 7, 29, 2, 30, 7, 30, 2, 31, 7, 31, 2, 32, 7, 32, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 6, 1, 6, 1, 6, 1, 7, 1, 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 9, 1, 9, 1, 9, 1, 9, 1, 10, 1, 10, 1, 10, 1, 10, 1, 10, 1, 11, 1, 11, 1, 11, 1, 12, 1, 12, 1, 12, 1, 12, 1, 12, 1, 12, 1, 13, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 1, 14, 1, 14, 1, 15, 1, 15, 1, 15, 1, 15, 1, 15, 1, 16, 1, 16, 1, 16, 1, 16, 1, 16, 1, 16, 1, 17, 1, 17, 1, 17, 1, 17, 1, 17, 1, 17, 1, 17, 1, 18, 1, 18, 4, 18, 148, 8, 18, 11, 18, 12, 18, 149, 1, 18, 1, 18, 1, 19, 4, 19, 155, 8, 19, 11, 19, 12, 19, 156, 1, 20, 1, 20, 1, 21, 1, 21, 1, 22, 1, 22, 1, 23, 1, 23, 1, 24, 1, 24, 1, 25, 1, 25, 1, 26, 1, 26, 1, 27, 1, 27, 5, 27, 175, 8, 27, 10, 27, 12, 27, 178, 9, 27, 1, 28, 1, 28, 1, 28, 1, 29, 1, 29, 1, 29, 1, 29, 5, 29, 187, 8, 29, 10, 29, 12, 29, 190, 9, 29, 1, 29, 1, 29, 1, 30, 1, 30, 1, 31, 1, 31, 1, 32, 1, 32, 0, 0, 33, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 15, 8, 17, 9, 19, 10, 21, 11, 23, 12, 25, 13, 27, 14, 29, 15, 31, 16, 33, 17, 35, 18, 37, 19, 39, 20, 41, 21, 43, 22, 45, 23, 47, 24, 49, 25, 51, 26, 53, 27, 55, 28, 57, 29, 59, 30, 61, 0, 63, 0, 65, 0, 1, 0, 5, 2, 0, 65, 90, 97, 122, 5, 0, 45, 45, 48, 57, 65, 90, 95, 95, 97, 122, 2, 0, 9, 10, 32, 32, 1, 0, 10, 10, 2, 0, 10, 10, 34, 34, 199, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0, 0, 0, 0, 15, 1, 0, 0, 0, 0, 17, 1, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 21, 1, 0, 0, 0, 0, 23, 1, 0, 0, 0, 0, 25, 1, 0, 0, 0, 0, 27, 1, 0, 0, 0, 0, 29, 1, 0, 0, 0, 0, 31, 1, 0, 0, 0, 0, 33, 1, 0, 0, 0, 0, 35, 1, 0, 0, 0, 0, 37, 1, 0, 0, 0, 0, 39, 1, 0, 0, 0, 0, 41, 1, 0, 0, 0, 0, 43, 1, 0, 0, 0, 0, 45, 1, 0, 0, 0, 0, 47, 1, 0, 0, 0, 0, 49, 1, 0, 0, 0, 0, 51, 1, 0, 0, 0, 0, 53, 1, 0, 0, 0, 0, 55, 1, 0, 0, 0, 0, 57, 1, 0, 0, 0, 0, 59, 1, 0, 0, 0, 1, 67, 1, 0, 0, 0, 3, 72, 1, 0, 0, 0, 5, 78, 1, 0, 0, 0, 7, 82, 1, 0, 0, 0, 9, 87, 1, 0, 0, 0, 11, 90, 1, 0, 0, 0, 13, 92, 1, 0, 0, 0, 15, 95, 1, 0, 0, 0, 17, 97, 1, 0, 0, 0, 19, 100, 1, 0, 0, 0, 21, 105, 1, 0, 0, 0, 23, 110, 1, 0, 0, 0, 25, 113, 1, 0, 0, 0, 27, 119, 1, 0, 0, 0, 29, 122, 1, 0, 0, 0, 31, 127, 1, 0, 0, 0, 33, 132, 1, 0, 0, 0, 35, 138, 1, 0, 0, 0, 37, 145, 1, 0, 0, 0, 39, 154, 1, 0, 0, 0, 41, 158, 1, 0, 0, 0, 43, 160, 1, 0, 0, 0, 45, 162, 1, 0, 0, 0, 47, 164, 1, 0, 0, 0, 49, 166, 1, 0, 0, 0, 51, 168, 1, 0, 0, 0, 53, 170, 1, 0, 0, 0, 55, 172, 1, 0, 0, 0, 57, 179, 1, 0, 0, 0, 59, 182, 1, 0, 0, 0, 61, 193, 1, 0, 0, 0, 63, 195, 1, 0, 0, 0, 65, 197, 1, 0, 0, 0, 67, 68, 5, 70, 0, 0, 68, 69, 5, 85, 0, 0, 69, 70, 5, 78, 0, 0, 70, 71, 5, 67, 0, 0, 71, 2, 1, 0, 0, 0, 72, 73, 5, 80, 0, 0, 73, 74, 5, 82, 0, 0, 74, 75, 5, 79, 0, 0, 75, 76, 5, 84, 0, 0, 76, 77, 5, 79, 0, 0, 77, 4, 1, 0, 0, 0, 78, 79, 5, 73, 0, 0, 79, 80, 5, 78, 0, 0, 80, 81, 5, 84, 0, 0, 81, 6, 1, 0, 0, 0, 82, 83, 5, 86, 0, 0, 83, 84, 5, 79, 0, 0, 84, 85, 5, 73, 0, 0, 85, 86, 5, 68, 0, 0, 86, 8, 1, 0, 0, 0, 87, 88, 5, 60, 0, 0, 88, 89, 5, 61, 0, 0, 89, 10, 1, 0, 0, 0, 90, 91, 5, 60, 0, 0, 91, 12, 1, 0, 0, 0, 92, 93, 5, 62, 0, 0, 93, 94, 5, 61, 0, 0, 94, 14, 1, 0, 0, 0, 95, 96, 5, 62, 0, 0, 96, 16, 1, 0, 0, 0, 97, 98, 5, 73, 0, 0, 98, 99, 5, 70, 0, 0, 99, 18, 1, 0, 0, 0, 100, 101, 5, 84, 0, 0, 101, 102, 5, 72, 0, 0, 102, 103, 5, 69, 0, 0, 103, 104, 5, 78, 0, 0, 104, 20, 1, 0, 0, 0, 105, 106, 5, 69, 0, 0, 106, 107, 5, 76, 0, 0, 107, 108, 5, 83, 0, 0, 108, 109, 5, 69, 0, 0, 109, 22, 1, 0, 0, 0, 110, 111, 5, 70, 0, 0, 111, 112, 5, 73, 0, 0, 112, 24, 1, 0, 0, 0, 113, 114, 5, 87, 0, 0, 114, 115, 5, 72, 0, 0, 115, 116, 5, 73, 0, 0, 116, 117, 5, 76, 0, 0, 117, 118, 5, 69, 0, 0, 118, 26, 1, 0, 0, 0, 119, 120, 5, 68, 0, 0, 120, 121, 5, 79, 0, 0, 121, 28, 1, 0, 0, 0, 122, 123, 5, 68, 0, 0, 123, 124, 5, 79, 0, 0, 124, 125, 5, 78, 0, 0, 125, 126, 5, 69, 0, 0, 126, 30, 1, 0, 0, 0, 127, 128, 5, 82, 0, 0, 128, 129, 5, 69, 0, 0, 129, 130, 5, 65, 0, 0, 130, 131, 5, 68, 0, 0, 131, 32, 1, 0, 0, 0, 132, 133, 5, 80, 0, 0, 133, 134, 5, 82, 0, 0, 134, 135, 5, 73, 0, 0, 135, 136, 5, 78, 0, 0, 136, 137, 5, 84, 0, 0, 137, 34, 1, 0, 0, 0, 138, 139, 5, 82, 0, 0, 139, 140, 5, 69, 0, 0, 140, 141, 5, 84, 0, 0, 141, 142, 5, 85, 0, 0, 142, 143, 5, 82, 0, 0, 143, 144, 5, 78, 0, 0, 144, 36, 1, 0, 0, 0, 145, 147, 5, 34, 0, 0, 146, 148, 3, 65, 32, 0, 147, 146, 1, 0, 0, 0, 148, 149, 1, 0, 0, 0, 149, 147, 1, 0, 0, 0, 149, 150, 1, 0, 0, 0, 150, 151, 1, 0, 0, 0, 151, 152, 5, 34, 0, 0, 152, 38, 1, 0, 0, 0, 153, 155, 3, 63, 31, 0, 154, 153, 1, 0, 0, 0, 155, 156, 1, 0, 0, 0, 156, 154, 1, 0, 0, 0, 156, 157, 1, 0, 0, 0, 157, 40, 1, 0, 0, 0, 158, 159, 5, 40, 0, 0, 159, 42, 1, 0, 0, 0, 160, 161, 5, 41, 0, 0, 161, 44, 1, 0, 0, 0, 162, 163, 5, 43, 0, 0, 163, 46, 1, 0, 0, 0, 164, 165, 5, 45, 0, 0, 165, 48, 1, 0, 0, 0, 166, 167, 5, 47, 0, 0, 167, 50, 1, 0, 0, 0, 168, 169, 5, 42, 0, 0, 169, 52, 1, 0, 0, 0, 170, 171, 5, 37, 0, 0, 171, 54, 1, 0, 0, 0, 172, 176, 7, 0, 0, 0, 173, 175, 7, 1, 0, 0, 174, 173, 1, 0, 0, 0, 175, 178, 1, 0, 0, 0, 176, 174, 1, 0, 0, 0, 176, 177, 1, 0, 0, 0, 177, 56, 1, 0, 0, 0, 178, 176, 1, 0, 0, 0, 179, 180, 7, 2, 0, 0, 180, 181, 6, 28, 0, 0, 181, 58, 1, 0, 0, 0, 182, 183, 5, 47, 0, 0, 183, 184, 5, 47, 0, 0, 184, 188, 1, 0, 0, 0, 185, 187, 8, 3, 0, 0, 186, 185, 1, 0, 0, 0, 187, 190, 1, 0, 0, 0, 188, 186, 1, 0, 0, 0, 188, 189, 1, 0, 0, 0, 189, 191, 1, 0, 0, 0, 190, 188, 1, 0, 0, 0, 191, 192, 6, 29, 1, 0, 192, 60, 1, 0, 0, 0, 193, 194, 2, 97, 122, 0, 194, 62, 1, 0, 0, 0, 195, 196, 2, 48, 57, 0, 196, 64, 1, 0, 0, 0, 197, 198, 8, 4, 0, 0, 198, 66, 1, 0, 0, 0, 5, 0, 149, 156, 176, 188, 2, 1, 28, 0, 1, 29, 1]
\ No newline at end of file
+[4, 0, 31, 204, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, 7, 15, 2, 16, 7, 16, 2, 17, 7, 17, 2, 18, 7, 18, 2, 19, 7, 19, 2, 20, 7, 20, 2, 21, 7, 21, 2, 22, 7, 22, 2, 23, 7, 23, 2, 24, 7, 24, 2, 25, 7, 25, 2, 26, 7, 26, 2, 27, 7, 27, 2, 28, 7, 28, 2, 29, 7, 29, 2, 30, 7, 30, 2, 31, 7, 31, 2, 32, 7, 32, 2, 33, 7, 33, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 6, 1, 6, 1, 6, 1, 7, 1, 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 9, 1, 9, 1, 10, 1, 10, 1, 10, 1, 10, 1, 10, 1, 11, 1, 11, 1, 11, 1, 11, 1, 11, 1, 12, 1, 12, 1, 12, 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 1, 15, 1, 15, 1, 15, 1, 15, 1, 15, 1, 16, 1, 16, 1, 16, 1, 16, 1, 16, 1, 17, 1, 17, 1, 17, 1, 17, 1, 17, 1, 17, 1, 18, 1, 18, 1, 18, 1, 18, 1, 18, 1, 18, 1, 18, 1, 19, 1, 19, 4, 19, 153, 8, 19, 11, 19, 12, 19, 154, 1, 19, 1, 19, 1, 20, 4, 20, 160, 8, 20, 11, 20, 12, 20, 161, 1, 21, 1, 21, 1, 22, 1, 22, 1, 23, 1, 23, 1, 24, 1, 24, 1, 25, 1, 25, 1, 26, 1, 26, 1, 27, 1, 27, 1, 28, 1, 28, 5, 28, 180, 8, 28, 10, 28, 12, 28, 183, 9, 28, 1, 29, 1, 29, 1, 29, 1, 30, 1, 30, 1, 30, 1, 30, 5, 30, 192, 8, 30, 10, 30, 12, 30, 195, 9, 30, 1, 30, 1, 30, 1, 31, 1, 31, 1, 32, 1, 32, 1, 33, 1, 33, 0, 0, 34, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 15, 8, 17, 9, 19, 10, 21, 11, 23, 12, 25, 13, 27, 14, 29, 15, 31, 16, 33, 17, 35, 18, 37, 19, 39, 20, 41, 21, 43, 22, 45, 23, 47, 24, 49, 25, 51, 26, 53, 27, 55, 28, 57, 29, 59, 30, 61, 31, 63, 0, 65, 0, 67, 0, 1, 0, 5, 2, 0, 65, 90, 97, 122, 5, 0, 45, 45, 48, 57, 65, 90, 95, 95, 97, 122, 2, 0, 9, 10, 32, 32, 1, 0, 10, 10, 2, 0, 10, 10, 34, 34, 204, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0, 0, 0, 0, 15, 1, 0, 0, 0, 0, 17, 1, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 21, 1, 0, 0, 0, 0, 23, 1, 0, 0, 0, 0, 25, 1, 0, 0, 0, 0, 27, 1, 0, 0, 0, 0, 29, 1, 0, 0, 0, 0, 31, 1, 0, 0, 0, 0, 33, 1, 0, 0, 0, 0, 35, 1, 0, 0, 0, 0, 37, 1, 0, 0, 0, 0, 39, 1, 0, 0, 0, 0, 41, 1, 0, 0, 0, 0, 43, 1, 0, 0, 0, 0, 45, 1, 0, 0, 0, 0, 47, 1, 0, 0, 0, 0, 49, 1, 0, 0, 0, 0, 51, 1, 0, 0, 0, 0, 53, 1, 0, 0, 0, 0, 55, 1, 0, 0, 0, 0, 57, 1, 0, 0, 0, 0, 59, 1, 0, 0, 0, 0, 61, 1, 0, 0, 0, 1, 69, 1, 0, 0, 0, 3, 74, 1, 0, 0, 0, 5, 80, 1, 0, 0, 0, 7, 84, 1, 0, 0, 0, 9, 89, 1, 0, 0, 0, 11, 92, 1, 0, 0, 0, 13, 94, 1, 0, 0, 0, 15, 97, 1, 0, 0, 0, 17, 99, 1, 0, 0, 0, 19, 102, 1, 0, 0, 0, 21, 105, 1, 0, 0, 0, 23, 110, 1, 0, 0, 0, 25, 115, 1, 0, 0, 0, 27, 118, 1, 0, 0, 0, 29, 124, 1, 0, 0, 0, 31, 127, 1, 0, 0, 0, 33, 132, 1, 0, 0, 0, 35, 137, 1, 0, 0, 0, 37, 143, 1, 0, 0, 0, 39, 150, 1, 0, 0, 0, 41, 159, 1, 0, 0, 0, 43, 163, 1, 0, 0, 0, 45, 165, 1, 0, 0, 0, 47, 167, 1, 0, 0, 0, 49, 169, 1, 0, 0, 0, 51, 171, 1, 0, 0, 0, 53, 173, 1, 0, 0, 0, 55, 175, 1, 0, 0, 0, 57, 177, 1, 0, 0, 0, 59, 184, 1, 0, 0, 0, 61, 187, 1, 0, 0, 0, 63, 198, 1, 0, 0, 0, 65, 200, 1, 0, 0, 0, 67, 202, 1, 0, 0, 0, 69, 70, 5, 70, 0, 0, 70, 71, 5, 85, 0, 0, 71, 72, 5, 78, 0, 0, 72, 73, 5, 67, 0, 0, 73, 2, 1, 0, 0, 0, 74, 75, 5, 80, 0, 0, 75, 76, 5, 82, 0, 0, 76, 77, 5, 79, 0, 0, 77, 78, 5, 84, 0, 0, 78, 79, 5, 79, 0, 0, 79, 4, 1, 0, 0, 0, 80, 81, 5, 73, 0, 0, 81, 82, 5, 78, 0, 0, 82, 83, 5, 84, 0, 0, 83, 6, 1, 0, 0, 0, 84, 85, 5, 86, 0, 0, 85, 86, 5, 79, 0, 0, 86, 87, 5, 73, 0, 0, 87, 88, 5, 68, 0, 0, 88, 8, 1, 0, 0, 0, 89, 90, 5, 60, 0, 0, 90, 91, 5, 61, 0, 0, 91, 10, 1, 0, 0, 0, 92, 93, 5, 60, 0, 0, 93, 12, 1, 0, 0, 0, 94, 95, 5, 62, 0, 0, 95, 96, 5, 61, 0, 0, 96, 14, 1, 0, 0, 0, 97, 98, 5, 62, 0, 0, 98, 16, 1, 0, 0, 0, 99, 100, 5, 58, 0, 0, 100, 101, 5, 61, 0, 0, 101, 18, 1, 0, 0, 0, 102, 103, 5, 73, 0, 0, 103, 104, 5, 70, 0, 0, 104, 20, 1, 0, 0, 0, 105, 106, 5, 84, 0, 0, 106, 107, 5, 72, 0, 0, 107, 108, 5, 69, 0, 0, 108, 109, 5, 78, 0, 0, 109, 22, 1, 0, 0, 0, 110, 111, 5, 69, 0, 0, 111, 112, 5, 76, 0, 0, 112, 113, 5, 83, 0, 0, 113, 114, 5, 69, 0, 0, 114, 24, 1, 0, 0, 0, 115, 116, 5, 70, 0, 0, 116, 117, 5, 73, 0, 0, 117, 26, 1, 0, 0, 0, 118, 119, 5, 87, 0, 0, 119, 120, 5, 72, 0, 0, 120, 121, 5, 73, 0, 0, 121, 122, 5, 76, 0, 0, 122, 123, 5, 69, 0, 0, 123, 28, 1, 0, 0, 0, 124, 125, 5, 68, 0, 0, 125, 126, 5, 79, 0, 0, 126, 30, 1, 0, 0, 0, 127, 128, 5, 68, 0, 0, 128, 129, 5, 79, 0, 0, 129, 130, 5, 78, 0, 0, 130, 131, 5, 69, 0, 0, 131, 32, 1, 0, 0, 0, 132, 133, 5, 82, 0, 0, 133, 134, 5, 69, 0, 0, 134, 135, 5, 65, 0, 0, 135, 136, 5, 68, 0, 0, 136, 34, 1, 0, 0, 0, 137, 138, 5, 80, 0, 0, 138, 139, 5, 82, 0, 0, 139, 140, 5, 73, 0, 0, 140, 141, 5, 78, 0, 0, 141, 142, 5, 84, 0, 0, 142, 36, 1, 0, 0, 0, 143, 144, 5, 82, 0, 0, 144, 145, 5, 69, 0, 0, 145, 146, 5, 84, 0, 0, 146, 147, 5, 85, 0, 0, 147, 148, 5, 82, 0, 0, 148, 149, 5, 78, 0, 0, 149, 38, 1, 0, 0, 0, 150, 152, 5, 34, 0, 0, 151, 153, 3, 67, 33, 0, 152, 151, 1, 0, 0, 0, 153, 154, 1, 0, 0, 0, 154, 152, 1, 0, 0, 0, 154, 155, 1, 0, 0, 0, 155, 156, 1, 0, 0, 0, 156, 157, 5, 34, 0, 0, 157, 40, 1, 0, 0, 0, 158, 160, 3, 65, 32, 0, 159, 158, 1, 0, 0, 0, 160, 161, 1, 0, 0, 0, 161, 159, 1, 0, 0, 0, 161, 162, 1, 0, 0, 0, 162, 42, 1, 0, 0, 0, 163, 164, 5, 40, 0, 0, 164, 44, 1, 0, 0, 0, 165, 166, 5, 41, 0, 0, 166, 46, 1, 0, 0, 0, 167, 168, 5, 43, 0, 0, 168, 48, 1, 0, 0, 0, 169, 170, 5, 45, 0, 0, 170, 50, 1, 0, 0, 0, 171, 172, 5, 47, 0, 0, 172, 52, 1, 0, 0, 0, 173, 174, 5, 42, 0, 0, 174, 54, 1, 0, 0, 0, 175, 176, 5, 37, 0, 0, 176, 56, 1, 0, 0, 0, 177, 181, 7, 0, 0, 0, 178, 180, 7, 1, 0, 0, 179, 178, 1, 0, 0, 0, 180, 183, 1, 0, 0, 0, 181, 179, 1, 0, 0, 0, 181, 182, 1, 0, 0, 0, 182, 58, 1, 0, 0, 0, 183, 181, 1, 0, 0, 0, 184, 185, 7, 2, 0, 0, 185, 186, 6, 29, 0, 0, 186, 60, 1, 0, 0, 0, 187, 188, 5, 47, 0, 0, 188, 189, 5, 47, 0, 0, 189, 193, 1, 0, 0, 0, 190, 192, 8, 3, 0, 0, 191, 190, 1, 0, 0, 0, 192, 195, 1, 0, 0, 0, 193, 191, 1, 0, 0, 0, 193, 194, 1, 0, 0, 0, 194, 196, 1, 0, 0, 0, 195, 193, 1, 0, 0, 0, 196, 197, 6, 30, 1, 0, 197, 62, 1, 0, 0, 0, 198, 199, 2, 97, 122, 0, 199, 64, 1, 0, 0, 0, 200, 201, 2, 48, 57, 0, 201, 66, 1, 0, 0, 0, 202, 203, 8, 4, 0, 0, 203, 68, 1, 0, 0, 0, 5, 0, 154, 161, 181, 193, 2, 1, 29, 0, 1, 30, 1]
\ No newline at end of file
diff --git a/src/main/antlr/.antlr/VSLLexer.java b/src/main/antlr/.antlr/VSLLexer.java
index b3fe90f..7700158 100644
--- a/src/main/antlr/.antlr/VSLLexer.java
+++ b/src/main/antlr/.antlr/VSLLexer.java
@@ -20,9 +20,9 @@ public class VSLLexer extends Lexer {
 		new PredictionContextCache();
 	public static final int
 		FUNCTION=1, PROTOTYPE=2, TYPE_INT=3, TYPE_VOID=4, LE=5, LT=6, GE=7, GT=8, 
-		IF=9, THEN=10, ELSE=11, FIN=12, WHILE=13, DO=14, DONE=15, READ=16, PRINT=17, 
-		RETURN=18, TEXT=19, NUMBER=20, ParO=21, ParF=22, PLUS=23, MINUS=24, DIV=25, 
-		TIMES=26, MOD=27, IDENT=28, WS=29, COMMENT=30;
+		ASSIGN=9, IF=10, THEN=11, ELSE=12, FIN=13, WHILE=14, DO=15, DONE=16, READ=17, 
+		PRINT=18, RETURN=19, TEXT=20, NUMBER=21, ParO=22, ParF=23, PLUS=24, MINUS=25, 
+		DIV=26, TIMES=27, MOD=28, IDENT=29, WS=30, COMMENT=31;
 	public static String[] channelNames = {
 		"DEFAULT_TOKEN_CHANNEL", "HIDDEN"
 	};
@@ -34,9 +34,9 @@ public class VSLLexer extends Lexer {
 	private static String[] makeRuleNames() {
 		return new String[] {
 			"FUNCTION", "PROTOTYPE", "TYPE_INT", "TYPE_VOID", "LE", "LT", "GE", "GT", 
-			"IF", "THEN", "ELSE", "FIN", "WHILE", "DO", "DONE", "READ", "PRINT", 
-			"RETURN", "TEXT", "NUMBER", "ParO", "ParF", "PLUS", "MINUS", "DIV", "TIMES", 
-			"MOD", "IDENT", "WS", "COMMENT", "LETTER", "DIGIT", "ASCII"
+			"ASSIGN", "IF", "THEN", "ELSE", "FIN", "WHILE", "DO", "DONE", "READ", 
+			"PRINT", "RETURN", "TEXT", "NUMBER", "ParO", "ParF", "PLUS", "MINUS", 
+			"DIV", "TIMES", "MOD", "IDENT", "WS", "COMMENT", "LETTER", "DIGIT", "ASCII"
 		};
 	}
 	public static final String[] ruleNames = makeRuleNames();
@@ -44,18 +44,18 @@ public class VSLLexer extends Lexer {
 	private static String[] makeLiteralNames() {
 		return new String[] {
 			null, "'FUNC'", "'PROTO'", "'INT'", "'VOID'", "'<='", "'<'", "'>='", 
-			"'>'", "'IF'", "'THEN'", "'ELSE'", "'FI'", "'WHILE'", "'DO'", "'DONE'", 
-			"'READ'", "'PRINT'", "'RETURN'", null, null, "'('", "')'", "'+'", "'-'", 
-			"'/'", "'*'", "'%'"
+			"'>'", "':='", "'IF'", "'THEN'", "'ELSE'", "'FI'", "'WHILE'", "'DO'", 
+			"'DONE'", "'READ'", "'PRINT'", "'RETURN'", null, null, "'('", "')'", 
+			"'+'", "'-'", "'/'", "'*'", "'%'"
 		};
 	}
 	private static final String[] _LITERAL_NAMES = makeLiteralNames();
 	private static String[] makeSymbolicNames() {
 		return new String[] {
 			null, "FUNCTION", "PROTOTYPE", "TYPE_INT", "TYPE_VOID", "LE", "LT", "GE", 
-			"GT", "IF", "THEN", "ELSE", "FIN", "WHILE", "DO", "DONE", "READ", "PRINT", 
-			"RETURN", "TEXT", "NUMBER", "ParO", "ParF", "PLUS", "MINUS", "DIV", "TIMES", 
-			"MOD", "IDENT", "WS", "COMMENT"
+			"GT", "ASSIGN", "IF", "THEN", "ELSE", "FIN", "WHILE", "DO", "DONE", "READ", 
+			"PRINT", "RETURN", "TEXT", "NUMBER", "ParO", "ParF", "PLUS", "MINUS", 
+			"DIV", "TIMES", "MOD", "IDENT", "WS", "COMMENT"
 		};
 	}
 	private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
@@ -119,10 +119,10 @@ public class VSLLexer extends Lexer {
 	@Override
 	public void action(RuleContext _localctx, int ruleIndex, int actionIndex) {
 		switch (ruleIndex) {
-		case 28:
+		case 29:
 			WS_action((RuleContext)_localctx, actionIndex);
 			break;
-		case 29:
+		case 30:
 			COMMENT_action((RuleContext)_localctx, actionIndex);
 			break;
 		}
@@ -143,7 +143,7 @@ public class VSLLexer extends Lexer {
 	}
 
 	public static final String _serializedATN =
-		"\u0004\u0000\u001e\u00c7\u0006\uffff\uffff\u0002\u0000\u0007\u0000\u0002"+
+		"\u0004\u0000\u001f\u00cc\u0006\uffff\uffff\u0002\u0000\u0007\u0000\u0002"+
 		"\u0001\u0007\u0001\u0002\u0002\u0007\u0002\u0002\u0003\u0007\u0003\u0002"+
 		"\u0004\u0007\u0004\u0002\u0005\u0007\u0005\u0002\u0006\u0007\u0006\u0002"+
 		"\u0007\u0007\u0007\u0002\b\u0007\b\u0002\t\u0007\t\u0002\n\u0007\n\u0002"+
@@ -153,117 +153,120 @@ public class VSLLexer extends Lexer {
 		"\u0002\u0015\u0007\u0015\u0002\u0016\u0007\u0016\u0002\u0017\u0007\u0017"+
 		"\u0002\u0018\u0007\u0018\u0002\u0019\u0007\u0019\u0002\u001a\u0007\u001a"+
 		"\u0002\u001b\u0007\u001b\u0002\u001c\u0007\u001c\u0002\u001d\u0007\u001d"+
-		"\u0002\u001e\u0007\u001e\u0002\u001f\u0007\u001f\u0002 \u0007 \u0001\u0000"+
-		"\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0001\u0001\u0001"+
-		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0002\u0001\u0002"+
-		"\u0001\u0002\u0001\u0002\u0001\u0003\u0001\u0003\u0001\u0003\u0001\u0003"+
-		"\u0001\u0003\u0001\u0004\u0001\u0004\u0001\u0004\u0001\u0005\u0001\u0005"+
-		"\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0007\u0001\u0007\u0001\b\u0001"+
-		"\b\u0001\b\u0001\t\u0001\t\u0001\t\u0001\t\u0001\t\u0001\n\u0001\n\u0001"+
-		"\n\u0001\n\u0001\n\u0001\u000b\u0001\u000b\u0001\u000b\u0001\f\u0001\f"+
-		"\u0001\f\u0001\f\u0001\f\u0001\f\u0001\r\u0001\r\u0001\r\u0001\u000e\u0001"+
-		"\u000e\u0001\u000e\u0001\u000e\u0001\u000e\u0001\u000f\u0001\u000f\u0001"+
-		"\u000f\u0001\u000f\u0001\u000f\u0001\u0010\u0001\u0010\u0001\u0010\u0001"+
-		"\u0010\u0001\u0010\u0001\u0010\u0001\u0011\u0001\u0011\u0001\u0011\u0001"+
-		"\u0011\u0001\u0011\u0001\u0011\u0001\u0011\u0001\u0012\u0001\u0012\u0004"+
-		"\u0012\u0094\b\u0012\u000b\u0012\f\u0012\u0095\u0001\u0012\u0001\u0012"+
-		"\u0001\u0013\u0004\u0013\u009b\b\u0013\u000b\u0013\f\u0013\u009c\u0001"+
-		"\u0014\u0001\u0014\u0001\u0015\u0001\u0015\u0001\u0016\u0001\u0016\u0001"+
-		"\u0017\u0001\u0017\u0001\u0018\u0001\u0018\u0001\u0019\u0001\u0019\u0001"+
-		"\u001a\u0001\u001a\u0001\u001b\u0001\u001b\u0005\u001b\u00af\b\u001b\n"+
-		"\u001b\f\u001b\u00b2\t\u001b\u0001\u001c\u0001\u001c\u0001\u001c\u0001"+
-		"\u001d\u0001\u001d\u0001\u001d\u0001\u001d\u0005\u001d\u00bb\b\u001d\n"+
-		"\u001d\f\u001d\u00be\t\u001d\u0001\u001d\u0001\u001d\u0001\u001e\u0001"+
-		"\u001e\u0001\u001f\u0001\u001f\u0001 \u0001 \u0000\u0000!\u0001\u0001"+
-		"\u0003\u0002\u0005\u0003\u0007\u0004\t\u0005\u000b\u0006\r\u0007\u000f"+
-		"\b\u0011\t\u0013\n\u0015\u000b\u0017\f\u0019\r\u001b\u000e\u001d\u000f"+
-		"\u001f\u0010!\u0011#\u0012%\u0013\'\u0014)\u0015+\u0016-\u0017/\u0018"+
-		"1\u00193\u001a5\u001b7\u001c9\u001d;\u001e=\u0000?\u0000A\u0000\u0001"+
-		"\u0000\u0005\u0002\u0000AZaz\u0005\u0000--09AZ__az\u0002\u0000\t\n  \u0001"+
-		"\u0000\n\n\u0002\u0000\n\n\"\"\u00c7\u0000\u0001\u0001\u0000\u0000\u0000"+
-		"\u0000\u0003\u0001\u0000\u0000\u0000\u0000\u0005\u0001\u0000\u0000\u0000"+
-		"\u0000\u0007\u0001\u0000\u0000\u0000\u0000\t\u0001\u0000\u0000\u0000\u0000"+
-		"\u000b\u0001\u0000\u0000\u0000\u0000\r\u0001\u0000\u0000\u0000\u0000\u000f"+
-		"\u0001\u0000\u0000\u0000\u0000\u0011\u0001\u0000\u0000\u0000\u0000\u0013"+
-		"\u0001\u0000\u0000\u0000\u0000\u0015\u0001\u0000\u0000\u0000\u0000\u0017"+
-		"\u0001\u0000\u0000\u0000\u0000\u0019\u0001\u0000\u0000\u0000\u0000\u001b"+
-		"\u0001\u0000\u0000\u0000\u0000\u001d\u0001\u0000\u0000\u0000\u0000\u001f"+
-		"\u0001\u0000\u0000\u0000\u0000!\u0001\u0000\u0000\u0000\u0000#\u0001\u0000"+
-		"\u0000\u0000\u0000%\u0001\u0000\u0000\u0000\u0000\'\u0001\u0000\u0000"+
-		"\u0000\u0000)\u0001\u0000\u0000\u0000\u0000+\u0001\u0000\u0000\u0000\u0000"+
-		"-\u0001\u0000\u0000\u0000\u0000/\u0001\u0000\u0000\u0000\u00001\u0001"+
-		"\u0000\u0000\u0000\u00003\u0001\u0000\u0000\u0000\u00005\u0001\u0000\u0000"+
-		"\u0000\u00007\u0001\u0000\u0000\u0000\u00009\u0001\u0000\u0000\u0000\u0000"+
-		";\u0001\u0000\u0000\u0000\u0001C\u0001\u0000\u0000\u0000\u0003H\u0001"+
-		"\u0000\u0000\u0000\u0005N\u0001\u0000\u0000\u0000\u0007R\u0001\u0000\u0000"+
-		"\u0000\tW\u0001\u0000\u0000\u0000\u000bZ\u0001\u0000\u0000\u0000\r\\\u0001"+
-		"\u0000\u0000\u0000\u000f_\u0001\u0000\u0000\u0000\u0011a\u0001\u0000\u0000"+
-		"\u0000\u0013d\u0001\u0000\u0000\u0000\u0015i\u0001\u0000\u0000\u0000\u0017"+
-		"n\u0001\u0000\u0000\u0000\u0019q\u0001\u0000\u0000\u0000\u001bw\u0001"+
-		"\u0000\u0000\u0000\u001dz\u0001\u0000\u0000\u0000\u001f\u007f\u0001\u0000"+
-		"\u0000\u0000!\u0084\u0001\u0000\u0000\u0000#\u008a\u0001\u0000\u0000\u0000"+
-		"%\u0091\u0001\u0000\u0000\u0000\'\u009a\u0001\u0000\u0000\u0000)\u009e"+
-		"\u0001\u0000\u0000\u0000+\u00a0\u0001\u0000\u0000\u0000-\u00a2\u0001\u0000"+
-		"\u0000\u0000/\u00a4\u0001\u0000\u0000\u00001\u00a6\u0001\u0000\u0000\u0000"+
-		"3\u00a8\u0001\u0000\u0000\u00005\u00aa\u0001\u0000\u0000\u00007\u00ac"+
-		"\u0001\u0000\u0000\u00009\u00b3\u0001\u0000\u0000\u0000;\u00b6\u0001\u0000"+
-		"\u0000\u0000=\u00c1\u0001\u0000\u0000\u0000?\u00c3\u0001\u0000\u0000\u0000"+
-		"A\u00c5\u0001\u0000\u0000\u0000CD\u0005F\u0000\u0000DE\u0005U\u0000\u0000"+
-		"EF\u0005N\u0000\u0000FG\u0005C\u0000\u0000G\u0002\u0001\u0000\u0000\u0000"+
-		"HI\u0005P\u0000\u0000IJ\u0005R\u0000\u0000JK\u0005O\u0000\u0000KL\u0005"+
-		"T\u0000\u0000LM\u0005O\u0000\u0000M\u0004\u0001\u0000\u0000\u0000NO\u0005"+
-		"I\u0000\u0000OP\u0005N\u0000\u0000PQ\u0005T\u0000\u0000Q\u0006\u0001\u0000"+
-		"\u0000\u0000RS\u0005V\u0000\u0000ST\u0005O\u0000\u0000TU\u0005I\u0000"+
-		"\u0000UV\u0005D\u0000\u0000V\b\u0001\u0000\u0000\u0000WX\u0005<\u0000"+
-		"\u0000XY\u0005=\u0000\u0000Y\n\u0001\u0000\u0000\u0000Z[\u0005<\u0000"+
-		"\u0000[\f\u0001\u0000\u0000\u0000\\]\u0005>\u0000\u0000]^\u0005=\u0000"+
-		"\u0000^\u000e\u0001\u0000\u0000\u0000_`\u0005>\u0000\u0000`\u0010\u0001"+
-		"\u0000\u0000\u0000ab\u0005I\u0000\u0000bc\u0005F\u0000\u0000c\u0012\u0001"+
-		"\u0000\u0000\u0000de\u0005T\u0000\u0000ef\u0005H\u0000\u0000fg\u0005E"+
-		"\u0000\u0000gh\u0005N\u0000\u0000h\u0014\u0001\u0000\u0000\u0000ij\u0005"+
-		"E\u0000\u0000jk\u0005L\u0000\u0000kl\u0005S\u0000\u0000lm\u0005E\u0000"+
-		"\u0000m\u0016\u0001\u0000\u0000\u0000no\u0005F\u0000\u0000op\u0005I\u0000"+
-		"\u0000p\u0018\u0001\u0000\u0000\u0000qr\u0005W\u0000\u0000rs\u0005H\u0000"+
-		"\u0000st\u0005I\u0000\u0000tu\u0005L\u0000\u0000uv\u0005E\u0000\u0000"+
-		"v\u001a\u0001\u0000\u0000\u0000wx\u0005D\u0000\u0000xy\u0005O\u0000\u0000"+
-		"y\u001c\u0001\u0000\u0000\u0000z{\u0005D\u0000\u0000{|\u0005O\u0000\u0000"+
-		"|}\u0005N\u0000\u0000}~\u0005E\u0000\u0000~\u001e\u0001\u0000\u0000\u0000"+
-		"\u007f\u0080\u0005R\u0000\u0000\u0080\u0081\u0005E\u0000\u0000\u0081\u0082"+
-		"\u0005A\u0000\u0000\u0082\u0083\u0005D\u0000\u0000\u0083 \u0001\u0000"+
-		"\u0000\u0000\u0084\u0085\u0005P\u0000\u0000\u0085\u0086\u0005R\u0000\u0000"+
-		"\u0086\u0087\u0005I\u0000\u0000\u0087\u0088\u0005N\u0000\u0000\u0088\u0089"+
-		"\u0005T\u0000\u0000\u0089\"\u0001\u0000\u0000\u0000\u008a\u008b\u0005"+
-		"R\u0000\u0000\u008b\u008c\u0005E\u0000\u0000\u008c\u008d\u0005T\u0000"+
-		"\u0000\u008d\u008e\u0005U\u0000\u0000\u008e\u008f\u0005R\u0000\u0000\u008f"+
-		"\u0090\u0005N\u0000\u0000\u0090$\u0001\u0000\u0000\u0000\u0091\u0093\u0005"+
-		"\"\u0000\u0000\u0092\u0094\u0003A \u0000\u0093\u0092\u0001\u0000\u0000"+
-		"\u0000\u0094\u0095\u0001\u0000\u0000\u0000\u0095\u0093\u0001\u0000\u0000"+
-		"\u0000\u0095\u0096\u0001\u0000\u0000\u0000\u0096\u0097\u0001\u0000\u0000"+
-		"\u0000\u0097\u0098\u0005\"\u0000\u0000\u0098&\u0001\u0000\u0000\u0000"+
-		"\u0099\u009b\u0003?\u001f\u0000\u009a\u0099\u0001\u0000\u0000\u0000\u009b"+
-		"\u009c\u0001\u0000\u0000\u0000\u009c\u009a\u0001\u0000\u0000\u0000\u009c"+
-		"\u009d\u0001\u0000\u0000\u0000\u009d(\u0001\u0000\u0000\u0000\u009e\u009f"+
-		"\u0005(\u0000\u0000\u009f*\u0001\u0000\u0000\u0000\u00a0\u00a1\u0005)"+
-		"\u0000\u0000\u00a1,\u0001\u0000\u0000\u0000\u00a2\u00a3\u0005+\u0000\u0000"+
-		"\u00a3.\u0001\u0000\u0000\u0000\u00a4\u00a5\u0005-\u0000\u0000\u00a50"+
-		"\u0001\u0000\u0000\u0000\u00a6\u00a7\u0005/\u0000\u0000\u00a72\u0001\u0000"+
-		"\u0000\u0000\u00a8\u00a9\u0005*\u0000\u0000\u00a94\u0001\u0000\u0000\u0000"+
-		"\u00aa\u00ab\u0005%\u0000\u0000\u00ab6\u0001\u0000\u0000\u0000\u00ac\u00b0"+
-		"\u0007\u0000\u0000\u0000\u00ad\u00af\u0007\u0001\u0000\u0000\u00ae\u00ad"+
-		"\u0001\u0000\u0000\u0000\u00af\u00b2\u0001\u0000\u0000\u0000\u00b0\u00ae"+
-		"\u0001\u0000\u0000\u0000\u00b0\u00b1\u0001\u0000\u0000\u0000\u00b18\u0001"+
-		"\u0000\u0000\u0000\u00b2\u00b0\u0001\u0000\u0000\u0000\u00b3\u00b4\u0007"+
-		"\u0002\u0000\u0000\u00b4\u00b5\u0006\u001c\u0000\u0000\u00b5:\u0001\u0000"+
-		"\u0000\u0000\u00b6\u00b7\u0005/\u0000\u0000\u00b7\u00b8\u0005/\u0000\u0000"+
-		"\u00b8\u00bc\u0001\u0000\u0000\u0000\u00b9\u00bb\b\u0003\u0000\u0000\u00ba"+
-		"\u00b9\u0001\u0000\u0000\u0000\u00bb\u00be\u0001\u0000\u0000\u0000\u00bc"+
-		"\u00ba\u0001\u0000\u0000\u0000\u00bc\u00bd\u0001\u0000\u0000\u0000\u00bd"+
-		"\u00bf\u0001\u0000\u0000\u0000\u00be\u00bc\u0001\u0000\u0000\u0000\u00bf"+
-		"\u00c0\u0006\u001d\u0001\u0000\u00c0<\u0001\u0000\u0000\u0000\u00c1\u00c2"+
-		"\u0002az\u0000\u00c2>\u0001\u0000\u0000\u0000\u00c3\u00c4\u000209\u0000"+
-		"\u00c4@\u0001\u0000\u0000\u0000\u00c5\u00c6\b\u0004\u0000\u0000\u00c6"+
-		"B\u0001\u0000\u0000\u0000\u0005\u0000\u0095\u009c\u00b0\u00bc\u0002\u0001"+
-		"\u001c\u0000\u0001\u001d\u0001";
+		"\u0002\u001e\u0007\u001e\u0002\u001f\u0007\u001f\u0002 \u0007 \u0002!"+
+		"\u0007!\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0002\u0001\u0002\u0001\u0002\u0001\u0002\u0001\u0003\u0001\u0003\u0001"+
+		"\u0003\u0001\u0003\u0001\u0003\u0001\u0004\u0001\u0004\u0001\u0004\u0001"+
+		"\u0005\u0001\u0005\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0007\u0001"+
+		"\u0007\u0001\b\u0001\b\u0001\b\u0001\t\u0001\t\u0001\t\u0001\n\u0001\n"+
+		"\u0001\n\u0001\n\u0001\n\u0001\u000b\u0001\u000b\u0001\u000b\u0001\u000b"+
+		"\u0001\u000b\u0001\f\u0001\f\u0001\f\u0001\r\u0001\r\u0001\r\u0001\r\u0001"+
+		"\r\u0001\r\u0001\u000e\u0001\u000e\u0001\u000e\u0001\u000f\u0001\u000f"+
+		"\u0001\u000f\u0001\u000f\u0001\u000f\u0001\u0010\u0001\u0010\u0001\u0010"+
+		"\u0001\u0010\u0001\u0010\u0001\u0011\u0001\u0011\u0001\u0011\u0001\u0011"+
+		"\u0001\u0011\u0001\u0011\u0001\u0012\u0001\u0012\u0001\u0012\u0001\u0012"+
+		"\u0001\u0012\u0001\u0012\u0001\u0012\u0001\u0013\u0001\u0013\u0004\u0013"+
+		"\u0099\b\u0013\u000b\u0013\f\u0013\u009a\u0001\u0013\u0001\u0013\u0001"+
+		"\u0014\u0004\u0014\u00a0\b\u0014\u000b\u0014\f\u0014\u00a1\u0001\u0015"+
+		"\u0001\u0015\u0001\u0016\u0001\u0016\u0001\u0017\u0001\u0017\u0001\u0018"+
+		"\u0001\u0018\u0001\u0019\u0001\u0019\u0001\u001a\u0001\u001a\u0001\u001b"+
+		"\u0001\u001b\u0001\u001c\u0001\u001c\u0005\u001c\u00b4\b\u001c\n\u001c"+
+		"\f\u001c\u00b7\t\u001c\u0001\u001d\u0001\u001d\u0001\u001d\u0001\u001e"+
+		"\u0001\u001e\u0001\u001e\u0001\u001e\u0005\u001e\u00c0\b\u001e\n\u001e"+
+		"\f\u001e\u00c3\t\u001e\u0001\u001e\u0001\u001e\u0001\u001f\u0001\u001f"+
+		"\u0001 \u0001 \u0001!\u0001!\u0000\u0000\"\u0001\u0001\u0003\u0002\u0005"+
+		"\u0003\u0007\u0004\t\u0005\u000b\u0006\r\u0007\u000f\b\u0011\t\u0013\n"+
+		"\u0015\u000b\u0017\f\u0019\r\u001b\u000e\u001d\u000f\u001f\u0010!\u0011"+
+		"#\u0012%\u0013\'\u0014)\u0015+\u0016-\u0017/\u00181\u00193\u001a5\u001b"+
+		"7\u001c9\u001d;\u001e=\u001f?\u0000A\u0000C\u0000\u0001\u0000\u0005\u0002"+
+		"\u0000AZaz\u0005\u0000--09AZ__az\u0002\u0000\t\n  \u0001\u0000\n\n\u0002"+
+		"\u0000\n\n\"\"\u00cc\u0000\u0001\u0001\u0000\u0000\u0000\u0000\u0003\u0001"+
+		"\u0000\u0000\u0000\u0000\u0005\u0001\u0000\u0000\u0000\u0000\u0007\u0001"+
+		"\u0000\u0000\u0000\u0000\t\u0001\u0000\u0000\u0000\u0000\u000b\u0001\u0000"+
+		"\u0000\u0000\u0000\r\u0001\u0000\u0000\u0000\u0000\u000f\u0001\u0000\u0000"+
+		"\u0000\u0000\u0011\u0001\u0000\u0000\u0000\u0000\u0013\u0001\u0000\u0000"+
+		"\u0000\u0000\u0015\u0001\u0000\u0000\u0000\u0000\u0017\u0001\u0000\u0000"+
+		"\u0000\u0000\u0019\u0001\u0000\u0000\u0000\u0000\u001b\u0001\u0000\u0000"+
+		"\u0000\u0000\u001d\u0001\u0000\u0000\u0000\u0000\u001f\u0001\u0000\u0000"+
+		"\u0000\u0000!\u0001\u0000\u0000\u0000\u0000#\u0001\u0000\u0000\u0000\u0000"+
+		"%\u0001\u0000\u0000\u0000\u0000\'\u0001\u0000\u0000\u0000\u0000)\u0001"+
+		"\u0000\u0000\u0000\u0000+\u0001\u0000\u0000\u0000\u0000-\u0001\u0000\u0000"+
+		"\u0000\u0000/\u0001\u0000\u0000\u0000\u00001\u0001\u0000\u0000\u0000\u0000"+
+		"3\u0001\u0000\u0000\u0000\u00005\u0001\u0000\u0000\u0000\u00007\u0001"+
+		"\u0000\u0000\u0000\u00009\u0001\u0000\u0000\u0000\u0000;\u0001\u0000\u0000"+
+		"\u0000\u0000=\u0001\u0000\u0000\u0000\u0001E\u0001\u0000\u0000\u0000\u0003"+
+		"J\u0001\u0000\u0000\u0000\u0005P\u0001\u0000\u0000\u0000\u0007T\u0001"+
+		"\u0000\u0000\u0000\tY\u0001\u0000\u0000\u0000\u000b\\\u0001\u0000\u0000"+
+		"\u0000\r^\u0001\u0000\u0000\u0000\u000fa\u0001\u0000\u0000\u0000\u0011"+
+		"c\u0001\u0000\u0000\u0000\u0013f\u0001\u0000\u0000\u0000\u0015i\u0001"+
+		"\u0000\u0000\u0000\u0017n\u0001\u0000\u0000\u0000\u0019s\u0001\u0000\u0000"+
+		"\u0000\u001bv\u0001\u0000\u0000\u0000\u001d|\u0001\u0000\u0000\u0000\u001f"+
+		"\u007f\u0001\u0000\u0000\u0000!\u0084\u0001\u0000\u0000\u0000#\u0089\u0001"+
+		"\u0000\u0000\u0000%\u008f\u0001\u0000\u0000\u0000\'\u0096\u0001\u0000"+
+		"\u0000\u0000)\u009f\u0001\u0000\u0000\u0000+\u00a3\u0001\u0000\u0000\u0000"+
+		"-\u00a5\u0001\u0000\u0000\u0000/\u00a7\u0001\u0000\u0000\u00001\u00a9"+
+		"\u0001\u0000\u0000\u00003\u00ab\u0001\u0000\u0000\u00005\u00ad\u0001\u0000"+
+		"\u0000\u00007\u00af\u0001\u0000\u0000\u00009\u00b1\u0001\u0000\u0000\u0000"+
+		";\u00b8\u0001\u0000\u0000\u0000=\u00bb\u0001\u0000\u0000\u0000?\u00c6"+
+		"\u0001\u0000\u0000\u0000A\u00c8\u0001\u0000\u0000\u0000C\u00ca\u0001\u0000"+
+		"\u0000\u0000EF\u0005F\u0000\u0000FG\u0005U\u0000\u0000GH\u0005N\u0000"+
+		"\u0000HI\u0005C\u0000\u0000I\u0002\u0001\u0000\u0000\u0000JK\u0005P\u0000"+
+		"\u0000KL\u0005R\u0000\u0000LM\u0005O\u0000\u0000MN\u0005T\u0000\u0000"+
+		"NO\u0005O\u0000\u0000O\u0004\u0001\u0000\u0000\u0000PQ\u0005I\u0000\u0000"+
+		"QR\u0005N\u0000\u0000RS\u0005T\u0000\u0000S\u0006\u0001\u0000\u0000\u0000"+
+		"TU\u0005V\u0000\u0000UV\u0005O\u0000\u0000VW\u0005I\u0000\u0000WX\u0005"+
+		"D\u0000\u0000X\b\u0001\u0000\u0000\u0000YZ\u0005<\u0000\u0000Z[\u0005"+
+		"=\u0000\u0000[\n\u0001\u0000\u0000\u0000\\]\u0005<\u0000\u0000]\f\u0001"+
+		"\u0000\u0000\u0000^_\u0005>\u0000\u0000_`\u0005=\u0000\u0000`\u000e\u0001"+
+		"\u0000\u0000\u0000ab\u0005>\u0000\u0000b\u0010\u0001\u0000\u0000\u0000"+
+		"cd\u0005:\u0000\u0000de\u0005=\u0000\u0000e\u0012\u0001\u0000\u0000\u0000"+
+		"fg\u0005I\u0000\u0000gh\u0005F\u0000\u0000h\u0014\u0001\u0000\u0000\u0000"+
+		"ij\u0005T\u0000\u0000jk\u0005H\u0000\u0000kl\u0005E\u0000\u0000lm\u0005"+
+		"N\u0000\u0000m\u0016\u0001\u0000\u0000\u0000no\u0005E\u0000\u0000op\u0005"+
+		"L\u0000\u0000pq\u0005S\u0000\u0000qr\u0005E\u0000\u0000r\u0018\u0001\u0000"+
+		"\u0000\u0000st\u0005F\u0000\u0000tu\u0005I\u0000\u0000u\u001a\u0001\u0000"+
+		"\u0000\u0000vw\u0005W\u0000\u0000wx\u0005H\u0000\u0000xy\u0005I\u0000"+
+		"\u0000yz\u0005L\u0000\u0000z{\u0005E\u0000\u0000{\u001c\u0001\u0000\u0000"+
+		"\u0000|}\u0005D\u0000\u0000}~\u0005O\u0000\u0000~\u001e\u0001\u0000\u0000"+
+		"\u0000\u007f\u0080\u0005D\u0000\u0000\u0080\u0081\u0005O\u0000\u0000\u0081"+
+		"\u0082\u0005N\u0000\u0000\u0082\u0083\u0005E\u0000\u0000\u0083 \u0001"+
+		"\u0000\u0000\u0000\u0084\u0085\u0005R\u0000\u0000\u0085\u0086\u0005E\u0000"+
+		"\u0000\u0086\u0087\u0005A\u0000\u0000\u0087\u0088\u0005D\u0000\u0000\u0088"+
+		"\"\u0001\u0000\u0000\u0000\u0089\u008a\u0005P\u0000\u0000\u008a\u008b"+
+		"\u0005R\u0000\u0000\u008b\u008c\u0005I\u0000\u0000\u008c\u008d\u0005N"+
+		"\u0000\u0000\u008d\u008e\u0005T\u0000\u0000\u008e$\u0001\u0000\u0000\u0000"+
+		"\u008f\u0090\u0005R\u0000\u0000\u0090\u0091\u0005E\u0000\u0000\u0091\u0092"+
+		"\u0005T\u0000\u0000\u0092\u0093\u0005U\u0000\u0000\u0093\u0094\u0005R"+
+		"\u0000\u0000\u0094\u0095\u0005N\u0000\u0000\u0095&\u0001\u0000\u0000\u0000"+
+		"\u0096\u0098\u0005\"\u0000\u0000\u0097\u0099\u0003C!\u0000\u0098\u0097"+
+		"\u0001\u0000\u0000\u0000\u0099\u009a\u0001\u0000\u0000\u0000\u009a\u0098"+
+		"\u0001\u0000\u0000\u0000\u009a\u009b\u0001\u0000\u0000\u0000\u009b\u009c"+
+		"\u0001\u0000\u0000\u0000\u009c\u009d\u0005\"\u0000\u0000\u009d(\u0001"+
+		"\u0000\u0000\u0000\u009e\u00a0\u0003A \u0000\u009f\u009e\u0001\u0000\u0000"+
+		"\u0000\u00a0\u00a1\u0001\u0000\u0000\u0000\u00a1\u009f\u0001\u0000\u0000"+
+		"\u0000\u00a1\u00a2\u0001\u0000\u0000\u0000\u00a2*\u0001\u0000\u0000\u0000"+
+		"\u00a3\u00a4\u0005(\u0000\u0000\u00a4,\u0001\u0000\u0000\u0000\u00a5\u00a6"+
+		"\u0005)\u0000\u0000\u00a6.\u0001\u0000\u0000\u0000\u00a7\u00a8\u0005+"+
+		"\u0000\u0000\u00a80\u0001\u0000\u0000\u0000\u00a9\u00aa\u0005-\u0000\u0000"+
+		"\u00aa2\u0001\u0000\u0000\u0000\u00ab\u00ac\u0005/\u0000\u0000\u00ac4"+
+		"\u0001\u0000\u0000\u0000\u00ad\u00ae\u0005*\u0000\u0000\u00ae6\u0001\u0000"+
+		"\u0000\u0000\u00af\u00b0\u0005%\u0000\u0000\u00b08\u0001\u0000\u0000\u0000"+
+		"\u00b1\u00b5\u0007\u0000\u0000\u0000\u00b2\u00b4\u0007\u0001\u0000\u0000"+
+		"\u00b3\u00b2\u0001\u0000\u0000\u0000\u00b4\u00b7\u0001\u0000\u0000\u0000"+
+		"\u00b5\u00b3\u0001\u0000\u0000\u0000\u00b5\u00b6\u0001\u0000\u0000\u0000"+
+		"\u00b6:\u0001\u0000\u0000\u0000\u00b7\u00b5\u0001\u0000\u0000\u0000\u00b8"+
+		"\u00b9\u0007\u0002\u0000\u0000\u00b9\u00ba\u0006\u001d\u0000\u0000\u00ba"+
+		"<\u0001\u0000\u0000\u0000\u00bb\u00bc\u0005/\u0000\u0000\u00bc\u00bd\u0005"+
+		"/\u0000\u0000\u00bd\u00c1\u0001\u0000\u0000\u0000\u00be\u00c0\b\u0003"+
+		"\u0000\u0000\u00bf\u00be\u0001\u0000\u0000\u0000\u00c0\u00c3\u0001\u0000"+
+		"\u0000\u0000\u00c1\u00bf\u0001\u0000\u0000\u0000\u00c1\u00c2\u0001\u0000"+
+		"\u0000\u0000\u00c2\u00c4\u0001\u0000\u0000\u0000\u00c3\u00c1\u0001\u0000"+
+		"\u0000\u0000\u00c4\u00c5\u0006\u001e\u0001\u0000\u00c5>\u0001\u0000\u0000"+
+		"\u0000\u00c6\u00c7\u0002az\u0000\u00c7@\u0001\u0000\u0000\u0000\u00c8"+
+		"\u00c9\u000209\u0000\u00c9B\u0001\u0000\u0000\u0000\u00ca\u00cb\b\u0004"+
+		"\u0000\u0000\u00cbD\u0001\u0000\u0000\u0000\u0005\u0000\u009a\u00a1\u00b5"+
+		"\u00c1\u0002\u0001\u001d\u0000\u0001\u001e\u0001";
 	public static final ATN _ATN =
 		new ATNDeserializer().deserialize(_serializedATN.toCharArray());
 	static {
diff --git a/src/main/antlr/.antlr/VSLLexer.tokens b/src/main/antlr/.antlr/VSLLexer.tokens
index 14ac99b..69a58ba 100644
--- a/src/main/antlr/.antlr/VSLLexer.tokens
+++ b/src/main/antlr/.antlr/VSLLexer.tokens
@@ -6,28 +6,29 @@ LE=5
 LT=6
 GE=7
 GT=8
-IF=9
-THEN=10
-ELSE=11
-FIN=12
-WHILE=13
-DO=14
-DONE=15
-READ=16
-PRINT=17
-RETURN=18
-TEXT=19
-NUMBER=20
-ParO=21
-ParF=22
-PLUS=23
-MINUS=24
-DIV=25
-TIMES=26
-MOD=27
-IDENT=28
-WS=29
-COMMENT=30
+ASSIGN=9
+IF=10
+THEN=11
+ELSE=12
+FIN=13
+WHILE=14
+DO=15
+DONE=16
+READ=17
+PRINT=18
+RETURN=19
+TEXT=20
+NUMBER=21
+ParO=22
+ParF=23
+PLUS=24
+MINUS=25
+DIV=26
+TIMES=27
+MOD=28
+IDENT=29
+WS=30
+COMMENT=31
 'FUNC'=1
 'PROTO'=2
 'INT'=3
@@ -36,20 +37,21 @@ COMMENT=30
 '<'=6
 '>='=7
 '>'=8
-'IF'=9
-'THEN'=10
-'ELSE'=11
-'FI'=12
-'WHILE'=13
-'DO'=14
-'DONE'=15
-'READ'=16
-'PRINT'=17
-'RETURN'=18
-'('=21
-')'=22
-'+'=23
-'-'=24
-'/'=25
-'*'=26
-'%'=27
+':='=9
+'IF'=10
+'THEN'=11
+'ELSE'=12
+'FI'=13
+'WHILE'=14
+'DO'=15
+'DONE'=16
+'READ'=17
+'PRINT'=18
+'RETURN'=19
+'('=22
+')'=23
+'+'=24
+'-'=25
+'/'=26
+'*'=27
+'%'=28
diff --git a/src/main/antlr/.antlr/VSLParser.interp b/src/main/antlr/.antlr/VSLParser.interp
index c406e4e..06d088f 100644
--- a/src/main/antlr/.antlr/VSLParser.interp
+++ b/src/main/antlr/.antlr/VSLParser.interp
@@ -8,6 +8,7 @@ null
 '<'
 '>='
 '>'
+':='
 'IF'
 'THEN'
 'ELSE'
@@ -41,6 +42,7 @@ LE
 LT
 GE
 GT
+ASSIGN
 IF
 THEN
 ELSE
@@ -78,4 +80,4 @@ type
 
 
 atn:
-[4, 1, 30, 80, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 4, 3, 38, 8, 3, 11, 3, 12, 3, 39, 1, 4, 1, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 5, 5, 52, 8, 5, 10, 5, 12, 5, 55, 9, 5, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 5, 6, 63, 8, 6, 10, 6, 12, 6, 66, 9, 6, 1, 7, 1, 7, 1, 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 9, 1, 9, 1, 9, 3, 9, 78, 8, 9, 1, 9, 0, 0, 10, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 0, 2, 1, 0, 23, 24, 1, 0, 25, 26, 73, 0, 20, 1, 0, 0, 0, 2, 24, 1, 0, 0, 0, 4, 32, 1, 0, 0, 0, 6, 37, 1, 0, 0, 0, 8, 41, 1, 0, 0, 0, 10, 45, 1, 0, 0, 0, 12, 56, 1, 0, 0, 0, 14, 67, 1, 0, 0, 0, 16, 70, 1, 0, 0, 0, 18, 77, 1, 0, 0, 0, 20, 21, 3, 2, 1, 0, 21, 22, 5, 0, 0, 1, 22, 23, 6, 0, -1, 0, 23, 1, 1, 0, 0, 0, 24, 25, 5, 1, 0, 0, 25, 26, 3, 18, 9, 0, 26, 27, 3, 16, 8, 0, 27, 28, 5, 21, 0, 0, 28, 29, 5, 22, 0, 0, 29, 30, 3, 6, 3, 0, 30, 31, 6, 1, -1, 0, 31, 3, 1, 0, 0, 0, 32, 33, 1, 0, 0, 0, 33, 5, 1, 0, 0, 0, 34, 35, 3, 8, 4, 0, 35, 36, 6, 3, -1, 0, 36, 38, 1, 0, 0, 0, 37, 34, 1, 0, 0, 0, 38, 39, 1, 0, 0, 0, 39, 37, 1, 0, 0, 0, 39, 40, 1, 0, 0, 0, 40, 7, 1, 0, 0, 0, 41, 42, 5, 18, 0, 0, 42, 43, 3, 10, 5, 0, 43, 44, 6, 4, -1, 0, 44, 9, 1, 0, 0, 0, 45, 46, 3, 12, 6, 0, 46, 53, 6, 5, -1, 0, 47, 48, 7, 0, 0, 0, 48, 49, 3, 12, 6, 0, 49, 50, 6, 5, -1, 0, 50, 52, 1, 0, 0, 0, 51, 47, 1, 0, 0, 0, 52, 55, 1, 0, 0, 0, 53, 51, 1, 0, 0, 0, 53, 54, 1, 0, 0, 0, 54, 11, 1, 0, 0, 0, 55, 53, 1, 0, 0, 0, 56, 57, 3, 14, 7, 0, 57, 64, 6, 6, -1, 0, 58, 59, 7, 1, 0, 0, 59, 60, 3, 14, 7, 0, 60, 61, 6, 6, -1, 0, 61, 63, 1, 0, 0, 0, 62, 58, 1, 0, 0, 0, 63, 66, 1, 0, 0, 0, 64, 62, 1, 0, 0, 0, 64, 65, 1, 0, 0, 0, 65, 13, 1, 0, 0, 0, 66, 64, 1, 0, 0, 0, 67, 68, 5, 20, 0, 0, 68, 69, 6, 7, -1, 0, 69, 15, 1, 0, 0, 0, 70, 71, 5, 28, 0, 0, 71, 72, 6, 8, -1, 0, 72, 17, 1, 0, 0, 0, 73, 74, 5, 3, 0, 0, 74, 78, 6, 9, -1, 0, 75, 76, 5, 4, 0, 0, 76, 78, 6, 9, -1, 0, 77, 73, 1, 0, 0, 0, 77, 75, 1, 0, 0, 0, 78, 19, 1, 0, 0, 0, 4, 39, 53, 64, 77]
\ No newline at end of file
+[4, 1, 31, 91, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 33, 8, 1, 10, 1, 12, 1, 36, 9, 1, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 4, 3, 43, 8, 3, 11, 3, 12, 3, 44, 1, 4, 1, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 5, 5, 57, 8, 5, 10, 5, 12, 5, 60, 9, 5, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 5, 6, 68, 8, 6, 10, 6, 12, 6, 71, 9, 6, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 3, 7, 80, 8, 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 9, 1, 9, 1, 9, 3, 9, 89, 8, 9, 1, 9, 0, 0, 10, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 0, 2, 1, 0, 24, 25, 1, 0, 26, 28, 86, 0, 20, 1, 0, 0, 0, 2, 34, 1, 0, 0, 0, 4, 37, 1, 0, 0, 0, 6, 42, 1, 0, 0, 0, 8, 46, 1, 0, 0, 0, 10, 50, 1, 0, 0, 0, 12, 61, 1, 0, 0, 0, 14, 79, 1, 0, 0, 0, 16, 81, 1, 0, 0, 0, 18, 88, 1, 0, 0, 0, 20, 21, 3, 2, 1, 0, 21, 22, 5, 0, 0, 1, 22, 23, 6, 0, -1, 0, 23, 1, 1, 0, 0, 0, 24, 25, 5, 1, 0, 0, 25, 26, 3, 18, 9, 0, 26, 27, 3, 16, 8, 0, 27, 28, 5, 22, 0, 0, 28, 29, 5, 23, 0, 0, 29, 30, 3, 6, 3, 0, 30, 31, 6, 1, -1, 0, 31, 33, 1, 0, 0, 0, 32, 24, 1, 0, 0, 0, 33, 36, 1, 0, 0, 0, 34, 32, 1, 0, 0, 0, 34, 35, 1, 0, 0, 0, 35, 3, 1, 0, 0, 0, 36, 34, 1, 0, 0, 0, 37, 38, 1, 0, 0, 0, 38, 5, 1, 0, 0, 0, 39, 40, 3, 8, 4, 0, 40, 41, 6, 3, -1, 0, 41, 43, 1, 0, 0, 0, 42, 39, 1, 0, 0, 0, 43, 44, 1, 0, 0, 0, 44, 42, 1, 0, 0, 0, 44, 45, 1, 0, 0, 0, 45, 7, 1, 0, 0, 0, 46, 47, 5, 19, 0, 0, 47, 48, 3, 10, 5, 0, 48, 49, 6, 4, -1, 0, 49, 9, 1, 0, 0, 0, 50, 51, 3, 12, 6, 0, 51, 58, 6, 5, -1, 0, 52, 53, 7, 0, 0, 0, 53, 54, 3, 12, 6, 0, 54, 55, 6, 5, -1, 0, 55, 57, 1, 0, 0, 0, 56, 52, 1, 0, 0, 0, 57, 60, 1, 0, 0, 0, 58, 56, 1, 0, 0, 0, 58, 59, 1, 0, 0, 0, 59, 11, 1, 0, 0, 0, 60, 58, 1, 0, 0, 0, 61, 62, 3, 14, 7, 0, 62, 69, 6, 6, -1, 0, 63, 64, 7, 1, 0, 0, 64, 65, 3, 14, 7, 0, 65, 66, 6, 6, -1, 0, 66, 68, 1, 0, 0, 0, 67, 63, 1, 0, 0, 0, 68, 71, 1, 0, 0, 0, 69, 67, 1, 0, 0, 0, 69, 70, 1, 0, 0, 0, 70, 13, 1, 0, 0, 0, 71, 69, 1, 0, 0, 0, 72, 73, 5, 21, 0, 0, 73, 80, 6, 7, -1, 0, 74, 75, 5, 22, 0, 0, 75, 76, 3, 10, 5, 0, 76, 77, 5, 23, 0, 0, 77, 78, 6, 7, -1, 0, 78, 80, 1, 0, 0, 0, 79, 72, 1, 0, 0, 0, 79, 74, 1, 0, 0, 0, 80, 15, 1, 0, 0, 0, 81, 82, 5, 29, 0, 0, 82, 83, 6, 8, -1, 0, 83, 17, 1, 0, 0, 0, 84, 85, 5, 3, 0, 0, 85, 89, 6, 9, -1, 0, 86, 87, 5, 4, 0, 0, 87, 89, 6, 9, -1, 0, 88, 84, 1, 0, 0, 0, 88, 86, 1, 0, 0, 0, 89, 19, 1, 0, 0, 0, 6, 34, 44, 58, 69, 79, 88]
\ No newline at end of file
diff --git a/src/main/antlr/.antlr/VSLParser.java b/src/main/antlr/.antlr/VSLParser.java
index 2217beb..fbbe861 100644
--- a/src/main/antlr/.antlr/VSLParser.java
+++ b/src/main/antlr/.antlr/VSLParser.java
@@ -24,9 +24,9 @@ public class VSLParser extends Parser {
 		new PredictionContextCache();
 	public static final int
 		FUNCTION=1, PROTOTYPE=2, TYPE_INT=3, TYPE_VOID=4, LE=5, LT=6, GE=7, GT=8, 
-		IF=9, THEN=10, ELSE=11, FIN=12, WHILE=13, DO=14, DONE=15, READ=16, PRINT=17, 
-		RETURN=18, TEXT=19, NUMBER=20, ParO=21, ParF=22, PLUS=23, MINUS=24, DIV=25, 
-		TIMES=26, MOD=27, IDENT=28, WS=29, COMMENT=30;
+		ASSIGN=9, IF=10, THEN=11, ELSE=12, FIN=13, WHILE=14, DO=15, DONE=16, READ=17, 
+		PRINT=18, RETURN=19, TEXT=20, NUMBER=21, ParO=22, ParF=23, PLUS=24, MINUS=25, 
+		DIV=26, TIMES=27, MOD=28, IDENT=29, WS=30, COMMENT=31;
 	public static final int
 		RULE_program = 0, RULE_function = 1, RULE_prototype = 2, RULE_list_instr = 3, 
 		RULE_instruction = 4, RULE_expression = 5, RULE_td_expression = 6, RULE_lit = 7, 
@@ -42,18 +42,18 @@ public class VSLParser extends Parser {
 	private static String[] makeLiteralNames() {
 		return new String[] {
 			null, "'FUNC'", "'PROTO'", "'INT'", "'VOID'", "'<='", "'<'", "'>='", 
-			"'>'", "'IF'", "'THEN'", "'ELSE'", "'FI'", "'WHILE'", "'DO'", "'DONE'", 
-			"'READ'", "'PRINT'", "'RETURN'", null, null, "'('", "')'", "'+'", "'-'", 
-			"'/'", "'*'", "'%'"
+			"'>'", "':='", "'IF'", "'THEN'", "'ELSE'", "'FI'", "'WHILE'", "'DO'", 
+			"'DONE'", "'READ'", "'PRINT'", "'RETURN'", null, null, "'('", "')'", 
+			"'+'", "'-'", "'/'", "'*'", "'%'"
 		};
 	}
 	private static final String[] _LITERAL_NAMES = makeLiteralNames();
 	private static String[] makeSymbolicNames() {
 		return new String[] {
 			null, "FUNCTION", "PROTOTYPE", "TYPE_INT", "TYPE_VOID", "LE", "LT", "GE", 
-			"GT", "IF", "THEN", "ELSE", "FIN", "WHILE", "DO", "DONE", "READ", "PRINT", 
-			"RETURN", "TEXT", "NUMBER", "ParO", "ParF", "PLUS", "MINUS", "DIV", "TIMES", 
-			"MOD", "IDENT", "WS", "COMMENT"
+			"GT", "ASSIGN", "IF", "THEN", "ELSE", "FIN", "WHILE", "DO", "DONE", "READ", 
+			"PRINT", "RETURN", "TEXT", "NUMBER", "ParO", "ParF", "PLUS", "MINUS", 
+			"DIV", "TIMES", "MOD", "IDENT", "WS", "COMMENT"
 		};
 	}
 	private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
@@ -151,17 +151,35 @@ public class VSLParser extends Parser {
 		public TypeContext t;
 		public IdentContext i;
 		public List_instrContext instrs;
-		public TerminalNode FUNCTION() { return getToken(VSLParser.FUNCTION, 0); }
-		public TerminalNode ParO() { return getToken(VSLParser.ParO, 0); }
-		public TerminalNode ParF() { return getToken(VSLParser.ParF, 0); }
-		public TypeContext type() {
-			return getRuleContext(TypeContext.class,0);
+		public List<TerminalNode> FUNCTION() { return getTokens(VSLParser.FUNCTION); }
+		public TerminalNode FUNCTION(int i) {
+			return getToken(VSLParser.FUNCTION, i);
 		}
-		public IdentContext ident() {
-			return getRuleContext(IdentContext.class,0);
+		public List<TerminalNode> ParO() { return getTokens(VSLParser.ParO); }
+		public TerminalNode ParO(int i) {
+			return getToken(VSLParser.ParO, i);
 		}
-		public List_instrContext list_instr() {
-			return getRuleContext(List_instrContext.class,0);
+		public List<TerminalNode> ParF() { return getTokens(VSLParser.ParF); }
+		public TerminalNode ParF(int i) {
+			return getToken(VSLParser.ParF, i);
+		}
+		public List<TypeContext> type() {
+			return getRuleContexts(TypeContext.class);
+		}
+		public TypeContext type(int i) {
+			return getRuleContext(TypeContext.class,i);
+		}
+		public List<IdentContext> ident() {
+			return getRuleContexts(IdentContext.class);
+		}
+		public IdentContext ident(int i) {
+			return getRuleContext(IdentContext.class,i);
+		}
+		public List<List_instrContext> list_instr() {
+			return getRuleContexts(List_instrContext.class);
+		}
+		public List_instrContext list_instr(int i) {
+			return getRuleContext(List_instrContext.class,i);
 		}
 		public FunctionContext(ParserRuleContext parent, int invokingState) {
 			super(parent, invokingState);
@@ -176,24 +194,37 @@ public class VSLParser extends Parser {
 		    SymTable sym_table = new SymTable();
 		    ((FunctionContext)_localctx).out =  new ArrayList<Function>();
 		  
+		int _la;
 		try {
 			enterOuterAlt(_localctx, 1);
 			{
-			setState(24);
-			match(FUNCTION);
-			setState(25);
-			((FunctionContext)_localctx).t = type();
-			setState(26);
-			((FunctionContext)_localctx).i = ident();
-			setState(27);
-			match(ParO);
-			setState(28);
-			match(ParF);
-			setState(29);
-			((FunctionContext)_localctx).instrs = list_instr(sym_table);
+			setState(34);
+			_errHandler.sync(this);
+			_la = _input.LA(1);
+			while (_la==FUNCTION) {
+				{
+				{
+				setState(24);
+				match(FUNCTION);
+				setState(25);
+				((FunctionContext)_localctx).t = type();
+				setState(26);
+				((FunctionContext)_localctx).i = ident();
+				setState(27);
+				match(ParO);
+				setState(28);
+				match(ParF);
+				setState(29);
+				((FunctionContext)_localctx).instrs = list_instr(sym_table);
 
-			    _localctx.out.add(new FunctionImp(((FunctionContext)_localctx).t.return_type, ((FunctionContext)_localctx).i.out, ((FunctionContext)_localctx).instrs.out));
-			  
+				    _localctx.out.add(new FunctionImp(((FunctionContext)_localctx).t.return_type, ((FunctionContext)_localctx).i.out, ((FunctionContext)_localctx).instrs.out));
+				  
+				}
+				}
+				setState(36);
+				_errHandler.sync(this);
+				_la = _input.LA(1);
+			}
 			}
 		}
 		catch (RecognitionException re) {
@@ -264,20 +295,20 @@ public class VSLParser extends Parser {
 		try {
 			enterOuterAlt(_localctx, 1);
 			{
-			setState(37); 
+			setState(42); 
 			_errHandler.sync(this);
 			_la = _input.LA(1);
 			do {
 				{
 				{
-				setState(34);
+				setState(39);
 				((List_instrContext)_localctx).instruction = instruction(table);
 
 				      _localctx.out.add(((List_instrContext)_localctx).instruction.out);
 				    
 				}
 				}
-				setState(39); 
+				setState(44); 
 				_errHandler.sync(this);
 				_la = _input.LA(1);
 			} while ( _la==RETURN );
@@ -317,9 +348,9 @@ public class VSLParser extends Parser {
 		try {
 			enterOuterAlt(_localctx, 1);
 			{
-			setState(41);
+			setState(46);
 			match(RETURN);
-			setState(42);
+			setState(47);
 			((InstructionContext)_localctx).e = expression(table);
 
 			    ((InstructionContext)_localctx).out = new Return_instrImp(((InstructionContext)_localctx).e.out);
@@ -373,19 +404,19 @@ public class VSLParser extends Parser {
 		try {
 			enterOuterAlt(_localctx, 1);
 			{
-			setState(45);
+			setState(50);
 			((ExpressionContext)_localctx).left = td_expression(table);
 
 			    ((ExpressionContext)_localctx).out =  ((ExpressionContext)_localctx).left.out;
 			    ((ExpressionContext)_localctx).return_Type =  ((ExpressionContext)_localctx).left.return_Type;
 			  
-			setState(53);
+			setState(58);
 			_errHandler.sync(this);
 			_la = _input.LA(1);
 			while (_la==PLUS || _la==MINUS) {
 				{
 				{
-				setState(47);
+				setState(52);
 				((ExpressionContext)_localctx).op = _input.LT(1);
 				_la = _input.LA(1);
 				if ( !(_la==PLUS || _la==MINUS) ) {
@@ -396,7 +427,7 @@ public class VSLParser extends Parser {
 					_errHandler.reportMatch(this);
 					consume();
 				}
-				setState(48);
+				setState(53);
 				((ExpressionContext)_localctx).right = td_expression(table);
 
 				    ((ExpressionContext)_localctx).out =  new BinopExpressionImp(
@@ -405,14 +436,14 @@ public class VSLParser extends Parser {
 				        case MINUS -> Op.MINUS;
 				        default -> throw new IllegalArgumentException("Unknown operator");
 				      },
-				      ((ExpressionContext)_localctx).left.out,
+				      _localctx.out,
 				      ((ExpressionContext)_localctx).right.out
 				    );
-				    ((ExpressionContext)_localctx).return_Type =  ((ExpressionContext)_localctx).right.return_Type;
+				    ((ExpressionContext)_localctx).return_Type =  ((ExpressionContext)_localctx).left.return_Type;
 				    
 				}
 				}
-				setState(55);
+				setState(60);
 				_errHandler.sync(this);
 				_la = _input.LA(1);
 			}
@@ -451,6 +482,10 @@ public class VSLParser extends Parser {
 		public TerminalNode DIV(int i) {
 			return getToken(VSLParser.DIV, i);
 		}
+		public List<TerminalNode> MOD() { return getTokens(VSLParser.MOD); }
+		public TerminalNode MOD(int i) {
+			return getToken(VSLParser.MOD, i);
+		}
 		public Td_expressionContext(ParserRuleContext parent, int invokingState) { super(parent, invokingState); }
 		public Td_expressionContext(ParserRuleContext parent, int invokingState, SymTable table) {
 			super(parent, invokingState);
@@ -466,22 +501,22 @@ public class VSLParser extends Parser {
 		try {
 			enterOuterAlt(_localctx, 1);
 			{
-			setState(56);
-			((Td_expressionContext)_localctx).left = lit();
+			setState(61);
+			((Td_expressionContext)_localctx).left = lit(table);
 
 			    ((Td_expressionContext)_localctx).out =  ((Td_expressionContext)_localctx).left.out;
 			    ((Td_expressionContext)_localctx).return_Type =  ((Td_expressionContext)_localctx).left.return_Type;
 			  
-			setState(64);
+			setState(69);
 			_errHandler.sync(this);
 			_la = _input.LA(1);
-			while (_la==DIV || _la==TIMES) {
+			while ((((_la) & ~0x3f) == 0 && ((1L << _la) & 469762048L) != 0)) {
 				{
 				{
-				setState(58);
+				setState(63);
 				((Td_expressionContext)_localctx).op = _input.LT(1);
 				_la = _input.LA(1);
-				if ( !(_la==DIV || _la==TIMES) ) {
+				if ( !((((_la) & ~0x3f) == 0 && ((1L << _la) & 469762048L) != 0)) ) {
 					((Td_expressionContext)_localctx).op = (Token)_errHandler.recoverInline(this);
 				}
 				else {
@@ -489,8 +524,8 @@ public class VSLParser extends Parser {
 					_errHandler.reportMatch(this);
 					consume();
 				}
-				setState(59);
-				((Td_expressionContext)_localctx).right = lit();
+				setState(64);
+				((Td_expressionContext)_localctx).right = lit(table);
 
 				    ((Td_expressionContext)_localctx).out =  new Program.BinopExpressionImp(
 				      switch(((Td_expressionContext)_localctx).op.getType()) {
@@ -499,14 +534,14 @@ public class VSLParser extends Parser {
 				        case MOD -> Op.MOD;
 				        default -> throw new IllegalArgumentException("Unknown operator");
 				      },
-				      ((Td_expressionContext)_localctx).left.out,
+				      _localctx.out, 
 				      ((Td_expressionContext)_localctx).right.out
 				    );
-				    ((Td_expressionContext)_localctx).return_Type =  ((Td_expressionContext)_localctx).right.return_Type;
+				    ((Td_expressionContext)_localctx).return_Type =  ((Td_expressionContext)_localctx).left.return_Type;
 				    
 				}
 				}
-				setState(66);
+				setState(71);
 				_errHandler.sync(this);
 				_la = _input.LA(1);
 			}
@@ -525,28 +560,60 @@ public class VSLParser extends Parser {
 
 	@SuppressWarnings("CheckReturnValue")
 	public static class LitContext extends ParserRuleContext {
+		public SymTable table;
 		public Expression out;
 		public Type return_Type;
 		public Token NUMBER;
+		public ExpressionContext e;
 		public TerminalNode NUMBER() { return getToken(VSLParser.NUMBER, 0); }
-		public LitContext(ParserRuleContext parent, int invokingState) {
+		public TerminalNode ParO() { return getToken(VSLParser.ParO, 0); }
+		public TerminalNode ParF() { return getToken(VSLParser.ParF, 0); }
+		public ExpressionContext expression() {
+			return getRuleContext(ExpressionContext.class,0);
+		}
+		public LitContext(ParserRuleContext parent, int invokingState) { super(parent, invokingState); }
+		public LitContext(ParserRuleContext parent, int invokingState, SymTable table) {
 			super(parent, invokingState);
+			this.table = table;
 		}
 		@Override public int getRuleIndex() { return RULE_lit; }
 	}
 
-	public final LitContext lit() throws RecognitionException {
-		LitContext _localctx = new LitContext(_ctx, getState());
+	public final LitContext lit(SymTable table) throws RecognitionException {
+		LitContext _localctx = new LitContext(_ctx, getState(), table);
 		enterRule(_localctx, 14, RULE_lit);
 		try {
-			enterOuterAlt(_localctx, 1);
-			{
-			setState(67);
-			((LitContext)_localctx).NUMBER = match(NUMBER);
+			setState(79);
+			_errHandler.sync(this);
+			switch (_input.LA(1)) {
+			case NUMBER:
+				enterOuterAlt(_localctx, 1);
+				{
+				setState(72);
+				((LitContext)_localctx).NUMBER = match(NUMBER);
 
-			      ((LitContext)_localctx).return_Type =  new Type_intImp();
-			      ((LitContext)_localctx).out =  new ConstImp((((LitContext)_localctx).NUMBER!=null?Integer.valueOf(((LitContext)_localctx).NUMBER.getText()):0));
-			    
+				      ((LitContext)_localctx).return_Type =  new Type_intImp();
+				      ((LitContext)_localctx).out =  new ConstImp((((LitContext)_localctx).NUMBER!=null?Integer.valueOf(((LitContext)_localctx).NUMBER.getText()):0));
+				    
+				}
+				break;
+			case ParO:
+				enterOuterAlt(_localctx, 2);
+				{
+				setState(74);
+				match(ParO);
+				setState(75);
+				((LitContext)_localctx).e = expression(table);
+				setState(76);
+				match(ParF);
+
+				      ((LitContext)_localctx).out = ((LitContext)_localctx).e.out;
+				      ((LitContext)_localctx).return_Type = ((LitContext)_localctx).e.return_Type;
+				    
+				}
+				break;
+			default:
+				throw new NoViableAltException(this);
 			}
 		}
 		catch (RecognitionException re) {
@@ -577,7 +644,7 @@ public class VSLParser extends Parser {
 		try {
 			enterOuterAlt(_localctx, 1);
 			{
-			setState(70);
+			setState(81);
 			((IdentContext)_localctx).IDENT = match(IDENT);
 			 ((IdentContext)_localctx).out =  ((IdentContext)_localctx).IDENT.getText(); 
 			}
@@ -608,13 +675,13 @@ public class VSLParser extends Parser {
 		TypeContext _localctx = new TypeContext(_ctx, getState());
 		enterRule(_localctx, 18, RULE_type);
 		try {
-			setState(77);
+			setState(88);
 			_errHandler.sync(this);
 			switch (_input.LA(1)) {
 			case TYPE_INT:
 				enterOuterAlt(_localctx, 1);
 				{
-				setState(73);
+				setState(84);
 				match(TYPE_INT);
 				 ((TypeContext)_localctx).return_type =  new Type_intImp(); 
 				}
@@ -622,7 +689,7 @@ public class VSLParser extends Parser {
 			case TYPE_VOID:
 				enterOuterAlt(_localctx, 2);
 				{
-				setState(75);
+				setState(86);
 				match(TYPE_VOID);
 				 ((TypeContext)_localctx).return_type =  new Type_voidImp(); 
 				}
@@ -643,50 +710,57 @@ public class VSLParser extends Parser {
 	}
 
 	public static final String _serializedATN =
-		"\u0004\u0001\u001eP\u0002\u0000\u0007\u0000\u0002\u0001\u0007\u0001\u0002"+
+		"\u0004\u0001\u001f[\u0002\u0000\u0007\u0000\u0002\u0001\u0007\u0001\u0002"+
 		"\u0002\u0007\u0002\u0002\u0003\u0007\u0003\u0002\u0004\u0007\u0004\u0002"+
 		"\u0005\u0007\u0005\u0002\u0006\u0007\u0006\u0002\u0007\u0007\u0007\u0002"+
 		"\b\u0007\b\u0002\t\u0007\t\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000"+
 		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
-		"\u0001\u0001\u0001\u0001\u0001\u0002\u0001\u0002\u0001\u0003\u0001\u0003"+
-		"\u0001\u0003\u0004\u0003&\b\u0003\u000b\u0003\f\u0003\'\u0001\u0004\u0001"+
-		"\u0004\u0001\u0004\u0001\u0004\u0001\u0005\u0001\u0005\u0001\u0005\u0001"+
-		"\u0005\u0001\u0005\u0001\u0005\u0005\u00054\b\u0005\n\u0005\f\u00057\t"+
-		"\u0005\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0006\u0001"+
-		"\u0006\u0005\u0006?\b\u0006\n\u0006\f\u0006B\t\u0006\u0001\u0007\u0001"+
-		"\u0007\u0001\u0007\u0001\b\u0001\b\u0001\b\u0001\t\u0001\t\u0001\t\u0001"+
-		"\t\u0003\tN\b\t\u0001\t\u0000\u0000\n\u0000\u0002\u0004\u0006\b\n\f\u000e"+
-		"\u0010\u0012\u0000\u0002\u0001\u0000\u0017\u0018\u0001\u0000\u0019\u001a"+
-		"I\u0000\u0014\u0001\u0000\u0000\u0000\u0002\u0018\u0001\u0000\u0000\u0000"+
-		"\u0004 \u0001\u0000\u0000\u0000\u0006%\u0001\u0000\u0000\u0000\b)\u0001"+
-		"\u0000\u0000\u0000\n-\u0001\u0000\u0000\u0000\f8\u0001\u0000\u0000\u0000"+
-		"\u000eC\u0001\u0000\u0000\u0000\u0010F\u0001\u0000\u0000\u0000\u0012M"+
-		"\u0001\u0000\u0000\u0000\u0014\u0015\u0003\u0002\u0001\u0000\u0015\u0016"+
-		"\u0005\u0000\u0000\u0001\u0016\u0017\u0006\u0000\uffff\uffff\u0000\u0017"+
-		"\u0001\u0001\u0000\u0000\u0000\u0018\u0019\u0005\u0001\u0000\u0000\u0019"+
-		"\u001a\u0003\u0012\t\u0000\u001a\u001b\u0003\u0010\b\u0000\u001b\u001c"+
-		"\u0005\u0015\u0000\u0000\u001c\u001d\u0005\u0016\u0000\u0000\u001d\u001e"+
-		"\u0003\u0006\u0003\u0000\u001e\u001f\u0006\u0001\uffff\uffff\u0000\u001f"+
-		"\u0003\u0001\u0000\u0000\u0000 !\u0001\u0000\u0000\u0000!\u0005\u0001"+
-		"\u0000\u0000\u0000\"#\u0003\b\u0004\u0000#$\u0006\u0003\uffff\uffff\u0000"+
-		"$&\u0001\u0000\u0000\u0000%\"\u0001\u0000\u0000\u0000&\'\u0001\u0000\u0000"+
-		"\u0000\'%\u0001\u0000\u0000\u0000\'(\u0001\u0000\u0000\u0000(\u0007\u0001"+
-		"\u0000\u0000\u0000)*\u0005\u0012\u0000\u0000*+\u0003\n\u0005\u0000+,\u0006"+
-		"\u0004\uffff\uffff\u0000,\t\u0001\u0000\u0000\u0000-.\u0003\f\u0006\u0000"+
-		".5\u0006\u0005\uffff\uffff\u0000/0\u0007\u0000\u0000\u000001\u0003\f\u0006"+
-		"\u000012\u0006\u0005\uffff\uffff\u000024\u0001\u0000\u0000\u00003/\u0001"+
-		"\u0000\u0000\u000047\u0001\u0000\u0000\u000053\u0001\u0000\u0000\u0000"+
-		"56\u0001\u0000\u0000\u00006\u000b\u0001\u0000\u0000\u000075\u0001\u0000"+
-		"\u0000\u000089\u0003\u000e\u0007\u00009@\u0006\u0006\uffff\uffff\u0000"+
-		":;\u0007\u0001\u0000\u0000;<\u0003\u000e\u0007\u0000<=\u0006\u0006\uffff"+
-		"\uffff\u0000=?\u0001\u0000\u0000\u0000>:\u0001\u0000\u0000\u0000?B\u0001"+
-		"\u0000\u0000\u0000@>\u0001\u0000\u0000\u0000@A\u0001\u0000\u0000\u0000"+
-		"A\r\u0001\u0000\u0000\u0000B@\u0001\u0000\u0000\u0000CD\u0005\u0014\u0000"+
-		"\u0000DE\u0006\u0007\uffff\uffff\u0000E\u000f\u0001\u0000\u0000\u0000"+
-		"FG\u0005\u001c\u0000\u0000GH\u0006\b\uffff\uffff\u0000H\u0011\u0001\u0000"+
-		"\u0000\u0000IJ\u0005\u0003\u0000\u0000JN\u0006\t\uffff\uffff\u0000KL\u0005"+
-		"\u0004\u0000\u0000LN\u0006\t\uffff\uffff\u0000MI\u0001\u0000\u0000\u0000"+
-		"MK\u0001\u0000\u0000\u0000N\u0013\u0001\u0000\u0000\u0000\u0004\'5@M";
+		"\u0001\u0001\u0001\u0001\u0005\u0001!\b\u0001\n\u0001\f\u0001$\t\u0001"+
+		"\u0001\u0002\u0001\u0002\u0001\u0003\u0001\u0003\u0001\u0003\u0004\u0003"+
+		"+\b\u0003\u000b\u0003\f\u0003,\u0001\u0004\u0001\u0004\u0001\u0004\u0001"+
+		"\u0004\u0001\u0005\u0001\u0005\u0001\u0005\u0001\u0005\u0001\u0005\u0001"+
+		"\u0005\u0005\u00059\b\u0005\n\u0005\f\u0005<\t\u0005\u0001\u0006\u0001"+
+		"\u0006\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0006\u0005\u0006D\b"+
+		"\u0006\n\u0006\f\u0006G\t\u0006\u0001\u0007\u0001\u0007\u0001\u0007\u0001"+
+		"\u0007\u0001\u0007\u0001\u0007\u0001\u0007\u0003\u0007P\b\u0007\u0001"+
+		"\b\u0001\b\u0001\b\u0001\t\u0001\t\u0001\t\u0001\t\u0003\tY\b\t\u0001"+
+		"\t\u0000\u0000\n\u0000\u0002\u0004\u0006\b\n\f\u000e\u0010\u0012\u0000"+
+		"\u0002\u0001\u0000\u0018\u0019\u0001\u0000\u001a\u001cV\u0000\u0014\u0001"+
+		"\u0000\u0000\u0000\u0002\"\u0001\u0000\u0000\u0000\u0004%\u0001\u0000"+
+		"\u0000\u0000\u0006*\u0001\u0000\u0000\u0000\b.\u0001\u0000\u0000\u0000"+
+		"\n2\u0001\u0000\u0000\u0000\f=\u0001\u0000\u0000\u0000\u000eO\u0001\u0000"+
+		"\u0000\u0000\u0010Q\u0001\u0000\u0000\u0000\u0012X\u0001\u0000\u0000\u0000"+
+		"\u0014\u0015\u0003\u0002\u0001\u0000\u0015\u0016\u0005\u0000\u0000\u0001"+
+		"\u0016\u0017\u0006\u0000\uffff\uffff\u0000\u0017\u0001\u0001\u0000\u0000"+
+		"\u0000\u0018\u0019\u0005\u0001\u0000\u0000\u0019\u001a\u0003\u0012\t\u0000"+
+		"\u001a\u001b\u0003\u0010\b\u0000\u001b\u001c\u0005\u0016\u0000\u0000\u001c"+
+		"\u001d\u0005\u0017\u0000\u0000\u001d\u001e\u0003\u0006\u0003\u0000\u001e"+
+		"\u001f\u0006\u0001\uffff\uffff\u0000\u001f!\u0001\u0000\u0000\u0000 \u0018"+
+		"\u0001\u0000\u0000\u0000!$\u0001\u0000\u0000\u0000\" \u0001\u0000\u0000"+
+		"\u0000\"#\u0001\u0000\u0000\u0000#\u0003\u0001\u0000\u0000\u0000$\"\u0001"+
+		"\u0000\u0000\u0000%&\u0001\u0000\u0000\u0000&\u0005\u0001\u0000\u0000"+
+		"\u0000\'(\u0003\b\u0004\u0000()\u0006\u0003\uffff\uffff\u0000)+\u0001"+
+		"\u0000\u0000\u0000*\'\u0001\u0000\u0000\u0000+,\u0001\u0000\u0000\u0000"+
+		",*\u0001\u0000\u0000\u0000,-\u0001\u0000\u0000\u0000-\u0007\u0001\u0000"+
+		"\u0000\u0000./\u0005\u0013\u0000\u0000/0\u0003\n\u0005\u000001\u0006\u0004"+
+		"\uffff\uffff\u00001\t\u0001\u0000\u0000\u000023\u0003\f\u0006\u00003:"+
+		"\u0006\u0005\uffff\uffff\u000045\u0007\u0000\u0000\u000056\u0003\f\u0006"+
+		"\u000067\u0006\u0005\uffff\uffff\u000079\u0001\u0000\u0000\u000084\u0001"+
+		"\u0000\u0000\u00009<\u0001\u0000\u0000\u0000:8\u0001\u0000\u0000\u0000"+
+		":;\u0001\u0000\u0000\u0000;\u000b\u0001\u0000\u0000\u0000<:\u0001\u0000"+
+		"\u0000\u0000=>\u0003\u000e\u0007\u0000>E\u0006\u0006\uffff\uffff\u0000"+
+		"?@\u0007\u0001\u0000\u0000@A\u0003\u000e\u0007\u0000AB\u0006\u0006\uffff"+
+		"\uffff\u0000BD\u0001\u0000\u0000\u0000C?\u0001\u0000\u0000\u0000DG\u0001"+
+		"\u0000\u0000\u0000EC\u0001\u0000\u0000\u0000EF\u0001\u0000\u0000\u0000"+
+		"F\r\u0001\u0000\u0000\u0000GE\u0001\u0000\u0000\u0000HI\u0005\u0015\u0000"+
+		"\u0000IP\u0006\u0007\uffff\uffff\u0000JK\u0005\u0016\u0000\u0000KL\u0003"+
+		"\n\u0005\u0000LM\u0005\u0017\u0000\u0000MN\u0006\u0007\uffff\uffff\u0000"+
+		"NP\u0001\u0000\u0000\u0000OH\u0001\u0000\u0000\u0000OJ\u0001\u0000\u0000"+
+		"\u0000P\u000f\u0001\u0000\u0000\u0000QR\u0005\u001d\u0000\u0000RS\u0006"+
+		"\b\uffff\uffff\u0000S\u0011\u0001\u0000\u0000\u0000TU\u0005\u0003\u0000"+
+		"\u0000UY\u0006\t\uffff\uffff\u0000VW\u0005\u0004\u0000\u0000WY\u0006\t"+
+		"\uffff\uffff\u0000XT\u0001\u0000\u0000\u0000XV\u0001\u0000\u0000\u0000"+
+		"Y\u0013\u0001\u0000\u0000\u0000\u0006\",:EOX";
 	public static final ATN _ATN =
 		new ATNDeserializer().deserialize(_serializedATN.toCharArray());
 	static {
diff --git a/src/main/antlr/.antlr/VSLParser.tokens b/src/main/antlr/.antlr/VSLParser.tokens
index 14ac99b..69a58ba 100644
--- a/src/main/antlr/.antlr/VSLParser.tokens
+++ b/src/main/antlr/.antlr/VSLParser.tokens
@@ -6,28 +6,29 @@ LE=5
 LT=6
 GE=7
 GT=8
-IF=9
-THEN=10
-ELSE=11
-FIN=12
-WHILE=13
-DO=14
-DONE=15
-READ=16
-PRINT=17
-RETURN=18
-TEXT=19
-NUMBER=20
-ParO=21
-ParF=22
-PLUS=23
-MINUS=24
-DIV=25
-TIMES=26
-MOD=27
-IDENT=28
-WS=29
-COMMENT=30
+ASSIGN=9
+IF=10
+THEN=11
+ELSE=12
+FIN=13
+WHILE=14
+DO=15
+DONE=16
+READ=17
+PRINT=18
+RETURN=19
+TEXT=20
+NUMBER=21
+ParO=22
+ParF=23
+PLUS=24
+MINUS=25
+DIV=26
+TIMES=27
+MOD=28
+IDENT=29
+WS=30
+COMMENT=31
 'FUNC'=1
 'PROTO'=2
 'INT'=3
@@ -36,20 +37,21 @@ COMMENT=30
 '<'=6
 '>='=7
 '>'=8
-'IF'=9
-'THEN'=10
-'ELSE'=11
-'FI'=12
-'WHILE'=13
-'DO'=14
-'DONE'=15
-'READ'=16
-'PRINT'=17
-'RETURN'=18
-'('=21
-')'=22
-'+'=23
-'-'=24
-'/'=25
-'*'=26
-'%'=27
+':='=9
+'IF'=10
+'THEN'=11
+'ELSE'=12
+'FI'=13
+'WHILE'=14
+'DO'=15
+'DONE'=16
+'READ'=17
+'PRINT'=18
+'RETURN'=19
+'('=22
+')'=23
+'+'=24
+'-'=25
+'/'=26
+'*'=27
+'%'=28
diff --git a/src/main/antlr/VSLLexer.g b/src/main/antlr/VSLLexer.g
index e3e2d30..0650516 100644
--- a/src/main/antlr/VSLLexer.g
+++ b/src/main/antlr/VSLLexer.g
@@ -17,13 +17,15 @@ TYPE_INT: 'INT'
 TYPE_VOID: 'VOID'
   ;  
 LE : '<='
-   ;
+  ;
 LT : '<'
-   ;
+  ;
 GE : '>='
-   ;
+  ;
 GT : '>'
-   ;
+  ;
+ASSIGN :':='
+  ;
 IF : 'IF'
   ; 
 THEN : 'THEN'
diff --git a/src/main/antlr/VSLParser.g b/src/main/antlr/VSLParser.g
index abf5df6..2915b00 100644
--- a/src/main/antlr/VSLParser.g
+++ b/src/main/antlr/VSLParser.g
@@ -34,10 +34,10 @@ function returns [ArrayList<Function> out]
     SymTable sym_table = new SymTable();
     $out = new ArrayList<Function>();
   }:
-  FUNCTION t=type i=ident ParO ParF instrs=list_instr[sym_table]
+  (FUNCTION t=type i=ident ParO ParF instrs=list_instr[sym_table]
   {
     $out.add(new FunctionImp($t.return_type, $i.out, $instrs.out));
-  }
+  })*
 ;
 
 prototype returns [Program p]:
@@ -56,8 +56,10 @@ instruction [SymTable table] returns [Instruction out]:
   RETURN e=expression [table]
     {
     $out =new Return_instrImp($e.out);}
+
   ;
 
+//Priorité lit(val, const ou paranthese) -> td_exp (*/%) -> exp (+-)
 expression [SymTable table] returns [Type return_Type, Expression out]:
 //Fix LL1 and compare add and sub first
   left=td_expression[table] {
@@ -66,6 +68,7 @@ expression [SymTable table] returns [Type return_Type, Expression out]:
   }
 //maybe it will be binop(s) with add/sub here
 //if it is mul or div, they are all gonna be left=td_expression[table] to handle
+// have to make $out,$right.out to make a loop
   (op=(PLUS | MINUS) right=td_expression[table] {
     $out = new BinopExpressionImp(
       switch($op.getType()) {
@@ -73,19 +76,19 @@ expression [SymTable table] returns [Type return_Type, Expression out]:
         case MINUS -> Op.MINUS;
         default -> throw new IllegalArgumentException("Unknown operator");
       },
-      $left.out,
+      $out,
       $right.out
     );
-    $return_Type = $right.return_Type;
+    $return_Type = $left.return_Type;
     })*
 ;
 
 td_expression [SymTable table] returns [Type return_Type, Expression out]:
-  left=lit {
+  left=lit[table] {
     $out = $left.out;
     $return_Type = $left.return_Type;
   }
-  (op=(TIMES | DIV) right=lit {
+  (op=(TIMES | DIV| MOD) right=lit [table] {
     $out = new Program.BinopExpressionImp(
       switch($op.getType()) {
         case TIMES -> Op.TIMES;
@@ -93,18 +96,22 @@ td_expression [SymTable table] returns [Type return_Type, Expression out]:
         case MOD -> Op.MOD;
         default -> throw new IllegalArgumentException("Unknown operator");
       },
-      $left.out,
+      $out, 
       $right.out
     );
-    $return_Type = $right.return_Type;
+    $return_Type = $left.return_Type;
     })*
 ;
 
-lit returns [Expression out, Type return_Type]:
+lit [SymTable table] returns [Expression out, Type return_Type]:
     NUMBER {
       $return_Type = new Type_intImp();
       $out = new ConstImp($NUMBER.int);
     }
+    | ParO e=expression[table] ParF{
+      $out=$e.out;
+      $return_Type=$e.return_Type;
+    }
   ;
 
 ident returns [String out]:
diff --git a/src/main/java/TP2/asd/Eval.java b/src/main/java/TP2/asd/Eval.java
index 487a1ff..d1e248c 100644
--- a/src/main/java/TP2/asd/Eval.java
+++ b/src/main/java/TP2/asd/Eval.java
@@ -17,6 +17,7 @@ public class Eval {
                 case Op.MINUS: return e.e1().accept(this, h)-e.e2().accept(this, h);
                 case Op.TIMES: return e.e1().accept(this, h)*e.e2().accept(this, h);
                 case Op.DIV: return e.e1().accept(this, h)/e.e2().accept(this, h);
+                case Op.MOD: return e.e1().accept(this, h)%e.e2().accept(this, h); 
                 default: throw new IllegalArgumentException();
             }
         }
@@ -29,6 +30,13 @@ public class Eval {
            ExprEval exprEval = new ExprEval();
            return e.e().accept(exprEval, h);
         }
+
+        @Override
+        public Integer visitAssign(AssignImp e, Map<String, Integer> h) {
+            //h.put(e.i(), e.t());
+            //TODO
+            return 1;
+        }
         
     }
 }
diff --git a/src/main/java/TP2/asd/Interface.java b/src/main/java/TP2/asd/Interface.java
index d615027..acf9656 100644
--- a/src/main/java/TP2/asd/Interface.java
+++ b/src/main/java/TP2/asd/Interface.java
@@ -30,6 +30,7 @@ public interface Interface{
 
     public interface InstrVisitor<H,S>{
         public S visitReturn(Return_instrImp e, H h);
+        public S visitAssign(AssignImp e, H h);
     }
 
     public interface ExprVisitor<H,S> {
@@ -41,12 +42,5 @@ public interface Interface{
         public String prettyprinter();
     }
 
-    public enum Op {PLUS, MINUS, TIMES, DIV,MOD}
-
-    //Eval
-    public interface ExprEval extends ExprVisitor<Map<String, Integer>, Integer> {
-    }
-
-    public interface TypeCheck extends ExprVisitor<Map<String, Type>, Type> {
-    }
+    public enum Op {PLUS, MINUS, TIMES, DIV, MOD}
 }
\ No newline at end of file
diff --git a/src/main/java/TP2/asd/Program.java b/src/main/java/TP2/asd/Program.java
index 198a4f0..fab11c2 100644
--- a/src/main/java/TP2/asd/Program.java
+++ b/src/main/java/TP2/asd/Program.java
@@ -42,6 +42,11 @@ public class Program{
             return v.visitReturn(this,h);
         }
     }
+    public static record AssignImp(String t, Expression e) implements Instruction{
+        public <H, S> S accept(InstrVisitor<H, S> v, H h) {
+            return v.visitAssign(this, h);
+        }
+    }
     
     public static record Type_voidImp() implements Type{
         public String prettyprinter() {
@@ -88,6 +93,12 @@ public class Program{
            ExprEval exprEval = new ExprEval();
            return e.e().accept(exprEval, h);
         }
+        @Override
+        public Integer visitAssign(AssignImp e, Map<String, Integer> h) {
+            //h.put(e.t(), e.e());
+            //TODO
+            return 1;
+        }
     }
 
     public static class ExprEval implements ExprVisitor<Map<String,Integer>,Integer>{