How to show Legend Label for Pie chart (Flex2)

programming flash
1

I am working with a pie chart (FLEX 2) and I want to show Legend also. I can see the legends in the bottom of the chart but there is no label for legends. I can see only three different color boxes (without label on it). How can I show the label.

Here is the code

<?xml version="1.0"?>
<!-- Simple example to demonstrate the PieChart control. -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
 
    <mx:Script>
        <![CDATA[
          
        import mx.collections.ArrayCollection;

        [Bindable]
        private var medalsAC:ArrayCollection = new ArrayCollection( [
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 } ]);
    
        private function displayGold(data:Object, field:String, index:Number, percentValue:Number):String {
            var temp:String= (" " + percentValue).substr(0,6);
            return data.Country + ": " + '
' + "Total Gold: " + data.Gold + '
' + temp + "%";
        }
        ]]>
    </mx:Script>

    <mx:Panel title="Olympics 2004 Medals Tally Panel" height="340" width="340">

        <mx:PieChart id="chart2" height="100%" width="100%"
            paddingRight="5" paddingLeft="5" 
            showDataTips="true" dataProvider="{medalsAC}">
            
            <mx:series>
                <mx:PieSeries labelPosition="callout" field="Gold" labelFunction="displayGold">
                    <mx:calloutStroke>
                        <mx:Stroke weight="0" color="0x888888" alpha="1.0"/>
                    </mx:calloutStroke>
                    <mx:radialStroke>
                        <mx:Stroke weight="0" color="#FFFFFF" alpha="0.20"/>
                    </mx:radialStroke>
                    <mx:stroke>
                        <mx:Stroke color="0" alpha="0.20" weight="2"/>
                    </mx:stroke>
                </mx:PieSeries>
            </mx:series>
        </mx:PieChart>
      <mx:Legend dataProvider="{chart2}" autoLayout="true" width="100%"
height="100%" labelPlacement="right" markerWidth="10"/>

    </mx:Panel>
</mx:Application>