AS3 Inverted Scrollbar

Hello AS3 gurus. Is it possible to create an inverted scrollbar? Because Im populating an empty movieclip with data and i want to scroll this data using a scrollbar, but instead of populating from the TOP TO BOTTOM Im populating the movieclip from the BOTTOM UPWARDS. Im having problems with my scrollbar if i did it this way. But if i populate the empty mc with data from TOP to BOTTOM, my scrollbar is working properly.

Any hints/ideas ?