How to read external xml in Flex

private var xProd:XML = new XML();

private var myLoader:URLLoader;

private var versionLoader:URLLoader;

private var XML_URL:String;

private var myXMLURL:URLRequest;

XML_URL = Constants.xmlPRODUCT;

myXMLURL = new URLRequest(XML_URL);

myLoader = new URLLoader(myXMLURL);

myLoader.addEventListener(Event.COMPLETE,xmlProductSupport);

private function xmlProductSupport(evnt:Event):void

{

xProd = XML(myLoader.data);

cmbProduct.dataProvider=xProd.product.name;

cmbProduct.selectedIndex=1;

}