Fixed issue about private directive

Frontend Angular 4/src/app/layout/plotter/graph3D/graph3D.component.ts

@@ -18,9 +18,9 @@ export class Graph3DComponent  {
   @ViewChild('graph3DElement') 
   private graph3DRef: ElementRef;
 
-  private graphProps : GraphProps = Default_GraphProps;
+  graphProps : GraphProps = Default_GraphProps;
   
-  private animationProps : AnimationProps = {
+  animationProps : AnimationProps = {
     visible: false,
     playing: false,
     value: 0,