diff --git a/Frontend Angular 4/src/app/layout/plotter/graph2D/graph2D.component.ts b/Frontend Angular 4/src/app/layout/plotter/graph2D/graph2D.component.ts
index b8b167689e53c5decd0365186e6d87dd08795f28..f8f86f402925f382a41582399f929fcc671f8e5a 100755
--- a/Frontend Angular 4/src/app/layout/plotter/graph2D/graph2D.component.ts	
+++ b/Frontend Angular 4/src/app/layout/plotter/graph2D/graph2D.component.ts	
@@ -1050,7 +1050,7 @@ generateFunctionAndExp = function (exp,graph,namefun6) {
         var lisB = this.generateFunctionAndExp(exp.exp2,graph,namefun6);
         var cond = this.createListExp(exp.cond);
         var g = this.createListExp(exp.cond);
-        var aux121 = [];
+        
         var cond2 = g.splice(1);
         var union = g[0]
 
@@ -1059,6 +1059,7 @@ generateFunctionAndExp = function (exp,graph,namefun6) {
             union = '('+union+' && '+a+')';
         }
         for (var fun1 of lisA){
+            var aux121 = [];
             if(fun1[0] == 'N'){
                 if(cond.length == 0){
                     aux121[0]='N';