Complicated alignment

Hi folks,

Quick question:
My movie is aligned to the middle of the stage. Now I would like to have a item that s always on the very left end of the movie, no matter how big or small the window is.

Strangely enough, the item’s x coordinate does not depend on the window size, it’s always 0.
So I can’t just calculate the difference between the old window and new window size and then either add it, or subtract from the item’s x coordinate

Do you guys have any idea how to make the item always be on the left end?

Thanks very much in advance…