[flexcoders] building a pie chart with XML data

[flexnoob]

I am trying to construct a pie chart using XML data and the resulting
chart is empty. Because I am using the trial version I do see the
"flex data visualization trial" message. However, the pie chart
does not appear. I have the xml file located in the src directory.



My flex 3 code:



<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";

     creationComplete="rockstar.send()">



     <mx:HTTPService id="rockstar" url="piebv.xml" />





     <mx:PieChart width="300" height="300" >

         <mx:series>

             <mx:PieSeries
dataProvider="{rockstar.lastResult.piebv.employee}"

                 field="@sales" labelField="@name"
labelPosition="callout" />

         </mx:series>

     </mx:PieChart>



</mx:Application>





My XML:



   <?xml version="1.0" encoding="utf-8" ?>

         <employees>

             <employee name="Doug"     sales="150000" />

             <employee name="Deepa"     sales="75000"  />

             <employee name="Darron" sales="30000"  />

             <employee name="Ben"     sales="60000"  />

         </employees>