<config>

<uikey>1</uikey>

</config>

<config>

<uikey>2</uikey>

</config>

var xml:XML = <config/>;

xml.uikey = 1;

trace(xml.toXMLString());

trace(xml.uikey);

xml.uikey = 1234567890;

trace(xml.toXMLString());

trace(xml.uikey);

XML.ignoreWhitespace = true;

var url:URLRequest = new URLRequest("cnfg.xml");

var loader:URLLoader = new URLLoader(url);

var uikey:String;

loader.addEventListener(Event.COMPLETE, onComplete);

function onComplete(e:Event)

{

        var xml:XML = new XML(e.target.data);

        uikey = xml.uikey;

        trace(uikey);

        xml.uikey = 2;

        trace(xml);

}