Actionscript 3 是否更改spark数据网格的数据提供程序数据？

我有一个可编辑属性设置为true的数据网格。当我更改数据时，数据提供程序中的数据不会被修改。如何将更改应用于数据提供程序？我是Flex新手，有人能对此提出建议吗？

Hero就是一个例子，我已经测试过了

你可以看到这个医生

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" minWidth="955" minHeight="600" creationComplete="application1_creationCompleteHandler(event)">

<mx:Script>
    <![CDATA[
        import mx.controls.TextInput;
        import mx.events.DataGridEvent;
        import mx.events.FlexEvent;


        private var list:Array  = [];//source dataProvider

        protected function application1_creationCompleteHandler(event:FlexEvent):void
        {
            list.push({name:"aaaa"}, {name:"bbbb"});

            myDataGrid.dataProvider = list;
        }

        protected function myDataGrid_itemEditEndHandler(event:DataGridEvent):void
        {
            // TODO Auto-generated method stub
            var targetDataGrid:DataGrid = event.target as DataGrid;
            var newData:String = TextInput(targetDataGrid.itemEditorInstance).text;
            var label:String = event.dataField;

            //here according to target data type in list,you may force changing type of newData, like int(newData)
            var indexOfList:int = targetDataGrid.editedItemPosition.rowIndex;
            list[indexOfList][label] = newData;

        }

    ]]>
</mx:Script>

<mx:DataGrid id="myDataGrid" editable="true" itemEditEnd="myDataGrid_itemEditEndHandler(event)">
    <mx:columns>
        <mx:DataGridColumn  dataField="name" headerText="Name" editable="true" />
    </mx:columns>
</mx:DataGrid>