diff --git a/be/app/Http/Controllers/MasterTaskController.php b/be/app/Http/Controllers/MasterTaskController.php
index f3521ee..c50447d 100644
--- a/be/app/Http/Controllers/MasterTaskController.php
+++ b/be/app/Http/Controllers/MasterTaskController.php
@@ -25,8 +25,8 @@ class MasterTaskController extends Controller
             if (!$value) continue;
 
             switch ($field) {
-                case 'created_at':
-                    $mastertasks->where($field, 'like', '%-' . $value . '-%');
+                case 'month':
+                    $mastertasks->where('created_at', 'like', $parameters['year'] . '-'  .  $parameters['month'] . '-%');
                     break;
 
                 case 'employee_id':