Changing scrollcontent from ScrollPane

I have a scrollpane with its content set to a movieclip ‘ImageHandling’.

But from another movieclip ‘Test’ I want to set the scrollpane property ‘content’ on the first Scene (the root) to ‘Movie2’

So this is my code:

_parent._parent.gotoAndStop(22);
_parent._parent.Scroller.setScrollContent(“Movie2”);
_parent._parent.Scroller.refreshPane();

But what it does is:

It goes to frame 22 in the root where there is a Scrollpane named ‘Scroller’. But its content isn’t changed. It stays ‘ImageHandling’.

Can anyone help me?

Thanks in advance

What does I have to do to change the content at runtime?