将数组集合传递到Advance数据网格时出现问题。我的数组集合结构类似于'

private var groupList:ArrayCollection = new ArrayCollection([
 {Country:'India', children:[

     {Country:'Series1', children:[
                               {Matches:'India Test series 1',isEnable:false,id:1,isSelected:true},
                               {Matches:'India Test series 2',isEnable:false,id:2,isSelected:true},
                               {Matches:'India Test series 3',isEnable:false,id:3,isSelected:true}]},
              {Country:'Series2', children:[
                               {Matches:'Australia Test series 1',isEnable:false,id:25,isSelected:true},
                               {Matches:'Australia Test series 2',isEnable:false,id:26,isSelected:true},
                               {Matches:'Australia Test series 3',isEnable:false,id:27,isSelected:true}]}

    ]},
{Country:'Austrila', children:[

    {Country:'Series1', children:[
                               {Matches:'Australia Test series 1',isEnable:false,id:46,isSelected:true},
                               {Matches:'Australia Test series 2',isEnable:false,id:47,isSelected:true},
                               {Matches:'Australia Test series 3',isEnable:false,id:48,isSelected:true}]},
{Country:'Series2', children:[
                               {Matches:'Australia Test series 1',isEnable:false,id:49,isSelected:true},
                               {Matches:'Australia Test series 2',isEnable:false,id:50,isSelected:true},
                               {Matches:'Australia Test series 3',isEnable:false,id:51,isSelected:true}]},
{Country:'Series3', children:[
                               {Matches:'Australia Test series 1',isEnable:false,id:52,isSelected:true},
                               {Matches:'Australia Test series 2',isEnable:false,id:53,isSelected:true},
                               {Matches:'Australia Test series 3',isEnable:false,id:54,isSelected:true}]}

]}

在dataProvider="{new HierarchicalData(groupList)}"中传递AD，运行良好。它显示了基于国家的树和子菜单。但我尝试通过以下代码将动态xml转换为Arraycollection

private function convertXmlToArrayCollection( file:String ):ArrayCollection
   {
    var xml:XMLDocument = new XMLDocument( file );

    //var decoder:SimpleXMLDecoder = new SimpleXMLDecoder();

   var decoder1:SimpleXMLDecoder = new SimpleXMLDecoder(true);

    var data1:Object = decoder1.decodeXML( xml );

    var array1:Array = ArrayUtil.toArray(data1);

    return new ArrayCollection( array1 );
   }

我的XML结构是

<Country Country="India ">
    <Country Country="Series ">
      <Matches Matches="BIndependiente-Colon" id="701536" isEnable="false" isSelected="true" startDate="2009-10-29 01:30:00" EndDate="2009-10-29 01:30:00"/>
      <Matches Matches="Boca Juniors-Chacarita Juniors" id="701633" isEnable="false" isSelected="true" startDate="2009-10-29 19:00:00" EndDate=""/>
    </Country>
  </Country>

    <Country Country="Australia">
    <Country Country="series">
      <Matches Matches="BIndependiente-Colon" id="701536" isEnable="false" isSelected="true" startDate="2009-10-29 01:30:00" EndDate="2009-10-29 01:30:00"/>
      <Matches Matches="Boca Juniors-Chacarita Juniors" id="701633" isEnable="false" isSelected="true" startDate="2009-10-29 19:00:00" EndDate=""/>
    </Country>
  </Country>

因此，如果我试图将这种格式的xml代码转换为arryacollection，它转换了数组集合，但当我传递到高级数据网格时，它不会显示任何结果。我错了什么？

groupList1= convertXmlToArrayCollection(string1);
Alert.show(groupList1[0].Country[0].Matches[0].id.toString());// output is =701536

我哪里弄错了？请告诉我，我会改什么？