public function deleteOperator($operatorId)
 {
     $instId = session('instId');
     try {
         $operator = new \Home\Model\OperatorModel();
         $result = $operator->deleteOperator($instId, $operatorId);
         $data = "true";
     } catch (Exception $e) {
         $data = "false";
     }
     $this->ajaxReturn($data);
 }