MOTM

How do I use velocity to control a VCA? What I would like to do is have 
the velocity CV from my MIDI/CV converter control the amount that the 
envelope affects the VCA. I need some sort of VCA between the envelope 
out CV and the VCA CV in. I tried using the first half of the 190, but 
that didn't work so well. Do I need a DC VCA? I glanced through the 
MOTM modules, but I didn't see any that mention this application.