diff --git a/projects/common/src/fm/effects/app-common.effects.ts b/projects/common/src/fm/effects/app-common.effects.ts
index 36e91ef..d2570ec 100644
--- a/projects/common/src/fm/effects/app-common.effects.ts
+++ b/projects/common/src/fm/effects/app-common.effects.ts
@@ -148,7 +148,7 @@ export class AppCommonEffects {
     ofType(appCommonActions.VIEWITEM),
     withLatestFrom(this.store$.select(appCommonReducers.selectGetItemTypes)),
     switchMap(([action, itemtypes]) => {
-      const a = action as appCommonActions.EditItem;
+      const a = action as appCommonActions.ViewItem;
       const itemType = itemtypes[a.item.itemType];
       const viewer = itemType.viewer;
       const editor = itemType.editor;
diff --git a/projects/common/src/fm/services/item.service.ts b/projects/common/src/fm/services/item.service.ts
index 601b4c8..970727b 100644
--- a/projects/common/src/fm/services/item.service.ts
+++ b/projects/common/src/fm/services/item.service.ts
@@ -115,7 +115,9 @@ export class ItemService {
 
   getChildItemListCount(parentcode: string, itemType?: string,dataFilter?: any): Observable<number> {
     let params = new HttpParams();
-    params = params.append("it", itemType);
+    if(itemType != null) {
+      params = params.append("it", itemType);
+    }
     if (dataFilter != null) {
       params = params.append("df", JSON.stringify(dataFilter));
     }