Communication between packages

1

Hi all,
I just cant figure out how to get this to work.

So I have 2 .as files (ImageMain and FullScreenImage)
And in the fla file I have a movieclip on stage called menu and this fla is linked to the ImageMain.as

ImageMain.as (part of the code):

package {
    import com.gfxcomplex.display.FullScreenImage;
             
    public class ImageMain extends Sprite {
        public static var menuIn:Number=-113;
        public static var menuUit:Number=1.5;
        public static var duration:Number=0.5;
            
        public function ImageMain():void {
            if (stage) {
                init();
            } else {
                addEventListener(Event.ADDED_TO_STAGE, init);
            }
        }

        private function init(e:Event = null):void {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            var backgroundImage:FullScreenImage=new FullScreenImage("city.jpg",FullScreenAlign.TOP_LEFT,true);
   
        }

FullScreenImage.as:

private function onStageResize(e:Event):void 
        {
            if (  _contentHolder is Sprite) {
                
                var sH:Number = stage.stageHeight;
                var sW:Number = stage.stageWidth;
                var image:DisplayObject;
                [COLOR=Red]var menuY:Number=stage.stageHeight/2;
                menu.y=menuY;[/COLOR]
                                
                switch(_align) {
                    
                    case "TL":                        
                        _contentHolder.width = sW;
                        _contentHolder.scaleY = _contentHolder.scaleX;
                        
                        if (_contentHolder.height < sH) {
                            _contentHolder.height = sH;
                            _contentHolder.scaleX = _contentHolder.scaleY;
                         }                        
                        break;

When I run the " red" code I get the next error:
1120: Access of undefined property menu.
It looks like the imported FullScreenImage.as cannot acces the menu movieclip on the stage.

Any help appriciated

Thanx