Move Submasters with Midi up AND DOWN

Hi!

I would like to use submasters controlled by Midi. They should work "fader"-style. 

With the velocity of the note going to full the submaster should go to full (this works already), with the velocity going to zero the submaster should please move down to zero (this doesn´t work in my experience).

Sorry for another feature request, all the best! 

Gerrit