[SOLVED] cocos2d-js 3.7 + cocostudio1.6 ,use listview pushBackDefaultItem() ERROR

cocos2d-x JavaScript
1

Hello,
I am using cocos2d-js 3.7 , and designed UI with CocoStudio1.6 .
I draged a listview and a panel to the panel_main.
Then I set the panel as listview’s itemModel.
Something is wrong when I call listview.pushBackDefaultItem();

Here is the error message:

Uncaught TypeError: layoutParameter.setGravity is not a function
  ccui.ListView.ccui.ScrollView.extend._remedyVerticalLayoutParameter	
  ccui.ListView.ccui.ScrollView.extend._remedyLayoutParameter	
  ccui.ListView.ccui.ScrollView.extend.pushBackDefaultItem	
  cc.Layer.extend.refreshUI

I set theGravity,then everything is ok