Blend Modes (Soft Light)

Hi !!
I need to apply the “Soft light” blending to my mc, but It seems Flash only supports “hardlight”, can we solve this in some way?
I found this:
http://www.lostinactionscript.com/blog/index.php/2009/05/26/custom-blend-modes-for-flash-10/
But it’s for Flash 10, and I need max Flash 9 (even more, Flash 8).

Thanks !!!
enri