diff --git a/src/fr/test/test.java b/src/fr/test/test.java
index 36b5cf7..45937d0 100644
--- a/src/fr/test/test.java
+++ b/src/fr/test/test.java
@@ -131,23 +131,28 @@ public class test {
     }
 
     /*
-     * A <-> B
-     * if A -> B then B -> A
+     * if A require B
+     * then A is incompatible with all incompatible of B
      */
     @Test
-    public void test_Incompatibilities_Complex_5(){
+    public void test_Require_Incompatibilities_Complex_5(){
         assertTrue(cm.getIncompatibilities(XS).contains(EG100));
         System.out.println("size XS incompatibilities : " + cm.getIncompatibilities(XS).size());
         assertTrue(cm.getIncompatibilities(XS).contains(TM5));
     }
 
+
     /*
+     *    Require   Require     Require
      * if A -> B && B -> C then A -> C
      */
     @Test
     public void test_Incompatibilities_Complex_7(){
-
-        assertTrue(cm.getIncompatibilities(XS).contains(IS));
+        cm.addRequirements(TC120, Set.of(XC));
+        System.out.println("TC120 requirment size : " + cm.getRequirements(TC120).contains(XC));
+        assertTrue(cm.getRequirements(TC120).contains(XC));
+        assertTrue(cm.getRequirements(EH120).contains(XC));
+        cm.removeRequirement(TC120, XC);
     }
 
     @Test