Flex Error Message TitleWindow

<?xml version="1.0" encoding="utf-8"?>
<s:TitleWindow xmlns:fx="http://ns.adobe.com/mxml/2009"
			   xmlns:s="library://ns.adobe.com/flex/spark"
			   xmlns:mx="library://ns.adobe.com/flex/mx" width="600" height="200"
			   title="Error Message Box"
			   close="titlewindow1_closeHandler(event)"
			   creationComplete="{cfservice.getHost()}">
	<fx:Declarations>
		<!-- Place non-visual elements (e.g., services, value objects) here -->
		<s:RemoteObject destination="ColdFusion" source="facade.model.utility.hostUtility" id="cfservice" endpoint="http://lc.mat.state.gov/flex2gateway/" showBusyCursor="true">
			<s:method name="getHost" fault="handleFault(event)" result="handleResult(event)" />
		</s:RemoteObject>
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			import mx.controls.Alert;
			import mx.events.CloseEvent;
			import mx.managers.PopUpManager;
			import mx.rpc.events.ResultEvent;

			//Alert.show('Hello');
			var myString:String;


			protected function titlewindow1_closeHandler(event:CloseEvent):void
			{
				PopUpManager.removePopUp( this );
			}
			private function getURL(url:String):void {
				var request:URLRequest;
				request = new URLRequest(url);
				navigateToURL(request, '_self');
			}
			protected function handleFault(evt):void {
				mx.controls.Alert.show(evt.fault.faultString);
			}

			public function handleResult(evt:ResultEvent):void {

				myString:String = evt.result.toString();
				//Alert.show(myString);
			}


		]]>
	</fx:Script>

	<!--<s:TextArea width="100%" height="65%" id="message"/>-->
	<s:VGroup x="24" y="38" width="448" height="300">
		<s:Label id="message" width="558" height="79"/>
		<mx:Button id="errBtn" label="Click to recover Session"
				   click="getURL(myString);"/>
	</s:VGroup>
</s:TitleWindow>