<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml"
           layout="vertical" width="600" height="400" showCloseButton="true"
           creationComplete="init()" >

<mx:Form width="100%" height="100%" defaultButton="{btSet}">
          <mx:Text text="{identif}" />            
 </mx:Form>
  
           <mx:ControlBar horizontalAlign="center">
               <mx:Button label="Set" id="btSet" click="setValues()" textAlign="center"/>
           </mx:ControlBar>
  
           <mx:RemoteObject id="xxService" fault="onFault(event)" destination="xxService">
      <mx:method name="getProperty" result="onResult(event)" fault="onFault(event)" />
            </mx:RemoteObject>
            
  <mx:Script>
               <![CDATA[
                   import com.art.JavaFlex.view.entity.Properties;
                   import mx.rpc.events.ResultEvent;
                   import mx.rpc.events.FaultEvent;
                   import mx.controls.Alert;
  
                   [Bindable]
                   private var st:Properties;
  
     [Bindable]
                   public var identif:String;                  
  
   private function init():void {
    identif = stage.loaderInfo.parameters.ident;
    xxService.getProperty(stage.loaderInfo.parameters.ident);
   }
  
                 public function setValues():void {
                   identif = stage.loaderInfo.parameters.ident;
    xxService.getProperty(stage.loaderInfo.parameters.ident);
   }
  
  
                 public function onFault(event:FaultEvent):void {                      
                        Alert.show(event.fault.message);
                 }
  
                  
   private function onResult(event:ResultEvent):void{
    st = event.result ? event.result as Properties : new Properties();
   }
  
               ]]>
           </mx:Script>
       </mx:TitleWindow>

Quando acionado pelo botao set está ok.. mas no init() nao acontece nada.