recalculate planned cost after deleting assigned material

app/Http/Controllers/AssignMaterialController.php

@@ -166,13 +166,15 @@ class AssignMaterialController extends Controller
                 );
                 $materialResource->update($dataUpdate);
             }
+			$activity = Activity::where('id', $data->activity_id)->first();
+			$activity->rencana_biaya -= $data->budget * $data->qty_planning;
+			$activity->save();
             $delete = $data->delete();
         }else{
             return response()->json(['status'=>'failed','message'=>'Data Assign material not found!','code'=>400], 400);
             die();
         }
 
-
         if($delete){
             return response()->json(['status'=>'success','message'=>'Assign material successfully deleted!','code'=>200], 200);
         }else{