import mx.rpc.events.ResultEvent;

private var params:Object;

[Bindable]
private var result:XML;

private function initApp():void{
    employeesService.cancel();
    params= new Object();
}

public function resultHandler(event:ResultEvent):void {
    result = XML( event.result);
}

public function fill():void{
    viewstack1.selectedIndex=1;
    employeesService.send(params);
}