Look at the example i sent you....
To get the y-position -
I added a text
made a every tick event
on that tick event, I set the text to --- BG.Y
on that same tick i set the BG.Y to Mouse.Y(you also have to add a mouse object)
Then just look at the Text to see the y position that fits the place you want it and set it to that....
This may not be the quickest/easiest way to do this but it works..
Look at the link again..http://dl.dropbox.com/u/51270524/Platform.zipsmitchell2011-12-08 13:31:01