edit _id in cust category

app/Http/Controllers/Controller.php

@@ -21,7 +21,7 @@ class Controller extends BaseController
 
             foreach ($response->data as $key => $r) {
                 $work_order = WorkOrder::where('wo', $r->wo)->first();
-                $form_submitted = Form::where('id', $work_order->_id)->first();
+                $form_submitted = Form::where('_id', $work_order->_id)->first();
 
                 $form_submitted->customer_category = $r->category;
                 $form_submitted->save();