diff --git a/application/common/Model/Task.php b/application/common/Model/Task.php
index 6e477c7..654ce57 100755
--- a/application/common/Model/Task.php
+++ b/application/common/Model/Task.php
@@ -520,9 +520,9 @@ class Task extends CommonModel
                 $executorCode=$task['exchange_list'][0];
                 unset($task['exchange_list'][0]);
                 if($task['exchange_list']){
-                    $task['exchange_list']=implode(',',$task['exchange_list']);
+                    $data['exchange_list']=implode(',',$task['exchange_list']);
                 }else{
-                    $task['exchange_list']='';
+                    $data['exchange_list']='';
                 }
                 TaskMember::inviteMember($executorCode, $taskCode, 1);