SI-533 box-unbox problem fix Signed-off-by: Dimitrios Chalepakis <dimitrios.chalepakis@pta.de>

diff --git a/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts b/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
index 6790233..4f8b755 100644
--- a/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
+++ b/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts

@@ -247,7 +247,7 @@
     if (this.currentFormState.isValid) {
       this.appState$.dispatch(
         gridFailureActions.saveGridFailure({
-          payload: new GridFailure({ ...unboxProperties(this.currentFormState.value) }),
+          payload: unboxProperties(this.currentFormState.value) as GridFailure,
         })
       );
       this.actionsSubject.pipe(ofType(gridFailureActions.saveGridFailureSuccess), take(1), takeUntil(this._endSubscriptions$)).subscribe(() => {

diff --git a/projects/grid-failure-information-app/src/app/shared/constants/globals.ts b/projects/grid-failure-information-app/src/app/shared/constants/globals.ts
index cef950c..16c63f2 100644
--- a/projects/grid-failure-information-app/src/app/shared/constants/globals.ts
+++ b/projects/grid-failure-information-app/src/app/shared/constants/globals.ts

@@ -26,4 +26,6 @@
     lessThan: 'ist kleiner als',
     inRange: 'ist zwischen',
   };
+
+  public static PROPERTIES_TO_BOX: string[] = ['addressPolygonPoints'];
 }

diff --git a/projects/grid-failure-information-app/src/app/shared/models/grid-failure.model.ts b/projects/grid-failure-information-app/src/app/shared/models/grid-failure.model.ts
index d1f4ca0..f0a68a7 100644
--- a/projects/grid-failure-information-app/src/app/shared/models/grid-failure.model.ts
+++ b/projects/grid-failure-information-app/src/app/shared/models/grid-failure.model.ts

@@ -10,7 +10,8 @@
  *
  * SPDX-License-Identifier: EPL-2.0
  ********************************************************************************/
-import { Boxed } from 'ngrx-forms';
+import { Boxed, box } from 'ngrx-forms';
+import { Globals } from '@grid-failure-information-app/shared/constants/globals';
 
 export class GridFailure {
   public id: string = null;
@@ -59,9 +60,15 @@
   public failureInformationCondensedId: string = null;
   public addressPolygonPoints: Array<[Number, Number]> | Boxed<Array<[Number, Number]>> = null;
 
-  public constructor(data: Partial<GridFailure> = null) {
+  public constructor(data: any = null) {
     Object.keys(data || {})
       .filter(property => this.hasOwnProperty(property))
-      .forEach(property => (this[property] = data[property]));
+      .forEach(property => {
+        if (Globals.PROPERTIES_TO_BOX.includes(property)) {
+          this[property] = box(data[property]);
+        } else {
+          this[property] = data[property];
+        }
+      });
   }
 }