Autenticação usando Flex

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
			   xmlns:s="library://ns.adobe.com/flex/spark"
			   xmlns:mx="library://ns.adobe.com/flex/mx"
			   xmlns:valueObjects="model.valueObjects*"
			   xmlns:services="services.*"
			   xmlns:valueObjects1="model.valueObjects.*"
			   minWidth="955" minHeight="600" currentState="autenticacao">

	<s:states>
		<s:State name="autenticacao"/>
	</s:states>
	
	<fx:Script>
		<![CDATA[
			
			
			import mx.controls.Alert;
			import mx.rpc.events.ResultEvent;
			protected function tenteLogin_resultHandler(result: ResultEvent):void
			{
		
				if(result.result as Boolean==true){
					Alert.show("Autenticado","Autenticou?");
					
				}else{
					Alert.show("NÃO Autenticado","Autenticou?");
				}
			}
			
			protected function logar():void
			{
				tenteLogin.token=usuarioService.autentica(usuario);
			}
		]]>
	</fx:Script>
	
	<fx:Declarations>
		<valueObjects1:UsuarioVO id="usuario"/>
		<services:UsuarioService id="usuarioService"/>
		<s:CallResponder id="tenteLogin" result="tenteLogin_resultHandler(event)"/>
		
		<!--Validadores-->
		<mx:EmailValidator id="val1" property="text" required="true" source="{email}"
						   trigger="{btLogin}" triggerEvent="click"/>
		<mx:Validator id="val2" property="text" required="true" source="{pass}" trigger="{btLogin}"
					  triggerEvent="click"/>

		
	</fx:Declarations>
	<s:Panel width="303" height="191" horizontalCenter="-1" title="Autenticação" verticalCenter="4">
		<s:Button id="btLogin" x="225" y="129" label="Login">
			<s:click>
				<![CDATA[
					if(Validator.validateAll(new Array(val1,val2)).length==0)
					{
						logar();
					}else
					{
						errorMessage.text="Corriga os erros apresentados";
					}
				
				
				
				]]>
			</s:click>
		</s:Button>
		<s:Label id="errorMessage" x="20" y="130" width="197" color="#F82217" fontWeight="bold"/>
		<s:Label x="38" y="40" fontWeight="bold" text="email:"/>
		<s:Label x="38" y="76" fontWeight="bold" text="password:"/>
		<s:TextInput id="email" x="109" y="31"/>
		<s:TextInput id="pass" x="109" y="69"/>
	</s:Panel>
</s:Application>