Fix bug

mobile/control/member_invoice.php

@@ -77,7 +77,7 @@ class member_invoiceControl extends mobileMemberControl {
         $model_invoice = Model('invoice');
 
         $condition = array();
-        array_push($condition, array('inv_id' => $_POST['inv_id']));
+        $condition['inv_id'] = $_POST['inv_id'];
 
         $data = array();
         $data['inv_title'] = urldecode($_POST['inv_title']);