diff --git a/projects/poweredsoft/ngx-data/package.json b/projects/poweredsoft/ngx-data/package.json
index bfcb093..5fec335 100644
--- a/projects/poweredsoft/ngx-data/package.json
+++ b/projects/poweredsoft/ngx-data/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@poweredsoft/ngx-data",
-  "version": "0.0.21",
+  "version": "0.0.22",
   "peerDependencies": {
     "@angular/common": "^8.2.4",
     "@angular/core": "^8.2.4",
diff --git a/projects/poweredsoft/ngx-data/src/lib/BaseHttpDataSourceOptionsBuilder.ts b/projects/poweredsoft/ngx-data/src/lib/BaseHttpDataSourceOptionsBuilder.ts
index e728319..8f82c8c 100644
--- a/projects/poweredsoft/ngx-data/src/lib/BaseHttpDataSourceOptionsBuilder.ts
+++ b/projects/poweredsoft/ngx-data/src/lib/BaseHttpDataSourceOptionsBuilder.ts
@@ -91,7 +91,7 @@ export abstract class BaseHttpDataSourceOptionsBuilder<TModel, TKey> {
 
     public addCommandByCallback<TCommand, TCommandResult>(name: string, commandHandler: (command: TCommand) => Observable<TCommandResult>, resolveCommandModel?: (event: IResolveCommandModelEvent<TModel>) => Observable<TCommand & any>) {
         const handleWrapper = command => {
-            return commandHandler(command).pipe(catchError(err => this._handleErrorPipe.bind(this)));
+            return commandHandler(command).pipe(catchError(this._handleErrorPipe.bind(this)));
         };
 
         this._commands[name] = <IDataSourceCommandAdapterOptions<TModel>>{