BitmapFill using dynamically loaded images?

I have a rect that i need to fill with a tiling image. The problem is that there seems to be no way of doing this without using embedded images, which isn’t a possibility for me.

Does anyone have any ideas about how to work around this? The reason i can’t embed the images is that they are selected by the user from a list, generated by a plsql procedure.

Oh, and it’s flex 4 beta 2 by the way, but any ideas that are flex 2/3 based would be useful too.

Cheers folks.