struggling with piechart and a backend[newbie]

[Anitha]

Hi all,
In my training project,I met one problem with my piechart and serviceresult.I want to populate the piechart with the webservice result.My backend contains four fields Year,Region,Sales,Profit.When I assign the fields Sales or Profit to my piechart it works successfully.But here I need to assign the Region names for my piechart widgets with the base of Profitpercentage . From the very beginning iam struggling with the piechart, hence any idea please???

My script:

[Bindable]
public var answer:ArrayCollection=new ArrayCollection;

private function onResult(event:ResultEvent):void
{
answer=(event.result.Tables["region_Breakdown"].Rows);
var ans:Array=ArrayUtil.toArray(answer);

}

<mx:PieChart x="459" y="320" id="pcdivision" dataProvider="{answer}" showDataTips="true" height="188" width="359">
<mx:series>
<mx:PieSeries field="???????" nameField="division" labelPosition="callout" showDataEffect="{interpolate}">


If someone give me some samples please, I would really appreciate it.


By,
Anitha.