Flex mobile orientation: force portrait mode and then allow auto orientation

Question

I'm creating a flex mobile project and I want to force the app to portrait orientation when I click a button, and when I click other button allow again to change the orientation.
This is my code when I click the first button, where I want to force portrait mode:
protected function click(event:MouseEvent):void{      if(stage.orientation != StageOrientation.DEFAULT){           stage.addEventListener(StageOrientationEvent.ORIENTATION_CHANGE, orientationChanged);           stage.setOrientation(StageOrientation.DEFAULT);      }else{           doSomething();      }  }  
private function orientationChanged(event:StageOrientationEvent):void{      doSomething();      stage.removeEventListener(StageOrientationEvent.ORIENTATION_CHANGE, orientationChanged); } 
private function doSomething():void{      stage.autoOrients = false; }
It works ok and it changes the orientation if it's needed.
Now, when I want to allow orientation change again, I've only putted:
stage.autoOrients = true;
It works ok if when I click the first button the app is in portrait and it doesn't have to change anything. But if it's on landscape and it have to change to portrait, when I allow orientation change again, it doesn't work ok.
Do you know if I have to allow or change something? Or, is there any better way to do this?
Thanks in advance

Answer 1

Thanks for your answer. It works, but I have the same problem that I have setting the orientation. If I'm on landscape, it changes to Portrait ok, but when I want to allow auto orientation again, it doesn't work well.
A little tricky I've found is:
When I want to force to portrait:
private var oldOrientation:String = null;
protected function click(event:MouseEvent):void{
   if(stage.orientation != StageOrientation.DEFAULT){
            oldOrientation = stage.orientation;
            stage.addEventListener(StageOrientationEvent.ORIENTATION_CHANGE, orientationChanged);
            stage.setOrientation(StageOrientation.DEFAULT);
   }else{
            doSomething();
private function orientationChanged(event:StageOrientationEvent):void{
            // do something if you are changing to portrait mode (the first change) and other thing if you are changing to old orientation
And when I want to allow auto orientation again:
if(oldOrientation != null){
        stage.setOrientation(oldOrientation);
        oldOrientation = null;