Someone

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" backgroundGradientColors="[#ffffff, #ffffff]" cornerRadius="0" xmlns:ns1="*" height="488" width="640">
	<mx:Script>
		<![CDATA[
			import mx.controls.ComboBase;
		
			import mx.core.*;
			import flash.display.*;

			import mx.rpc.remoting.RemoteObject;	
			import mx.rpc.events.FaultEvent;
			import mx.rpc.events.ResultEvent;
			import flash.net.Responder;
			import mx.controls.Alert;
			
			public function UpdateList(e:Event):void
			{				
			}
			
			public function fillList(tablename:String,fieldname:String):void
			{
				var gateway:RemotingConnection;
				gateway=new RemotingConnection("http://localhost/amfphp/gateway.php");
				gateway.call("getListElements.getElements",new Responder(onResult,onFault),tablename,fieldname);
			}
			
			public function onResult(result:Array):void
			{
				Alert.show(ctrlFrm.getChildAt(0).getChildAt(0).name);
			}
			
			public function onFault():void
			{
			
			}
			
		]]>
	</mx:Script>
	
	<mx:Canvas left="10" right="10" bottom="10" top="10" fontSize="10" cornerRadius="6" borderColor="#c0c0c0" borderStyle="solid">
		<mx:Panel layout="absolute" left="10" right="10" top="10" bottom="10" id="chartPanel" title="Chart Controls" fontSize="12">
			<mx:Form height="275" left="10" top="10" right="10" id="ctrlFrm" label="ctrlFrm">
				<mx:FormItem label="Select Artist :" id="frmArtist">
					<mx:ComboBox name="artistname" id="artistname" creationComplete="fillList('tracktable','artistname');"></mx:ComboBox>
				</mx:FormItem>
				<mx:FormItem label="Select Album :" id="frmAlbum">
					<mx:ComboBox name="albumname" id="albumname" creationComplete="fillList('tracktable','albumname');"></mx:ComboBox>
				</mx:FormItem>
				<mx:FormItem label="Select Track :" id="frmTrack">
					<mx:ComboBox name="trackname" id="trackname" creationComplete="fillList('tracktable','trackname');"></mx:ComboBox>
				</mx:FormItem>				
			</mx:Form>
		</mx:Panel>
	</mx:Canvas>
</mx:Application>