Using MEL to modify a PaintFX Tree

Hello,

I am creating an apple tree, and want to use PaintFX, so that I can use it's inherent animation system for tree wind (the tree is being composited on a windy video backplate). I was wondering if there is a way to replace a bud or flower in the PaintFX growth system, with a sphere (for an apple). I know that you can add MEL scripts (there's a space called Runtime, and Creation scripts). What would I need to do to add fruit to my tree?

Thanks in advance!

-=Ralph=-