Fix #447 - NaN in param "a" when generating simulation from chevron PAR

src/app/components/generic-calculator/calculator.component.ts

@@ -949,7 +949,7 @@ export class GenericCalculatorComponent implements OnInit, DoCheck, AfterViewChe
                         ZD1: pres.ZD1,
                         ZR2: pres.ZR2,
                         ZD2: pres.ZD2,
-                        a: pres.a
+                        a: pcal.a.hasMultipleValues ? pcal.a.getInferredValuesList(s)[i] : pcal.a.V,
                     });
                 }
             });
@@ -969,7 +969,7 @@ export class GenericCalculatorComponent implements OnInit, DoCheck, AfterViewChe
                 ZD1: pres.ZD1,
                 ZR2: pres.ZR2,
                 ZD2: pres.ZD2,
-                a: pres.a
+                a: pcal.a.V
             });
         }
     }