Mapping midi cc7 to Volume with Cubase

[Feasterfamine]

Hello all,

Thanks for all the useful info. I'm sure this is an easy thing to do, but I'm having a hard time figuring it out.

I'm using reason 12 as a rack plug-in in cubase 12 and can't figure out, for the life of me, how to map a midi fader on my behringer BCF which sends cc7 data to control the volume of a plugin. For instance, I want to load up an Dr.Rex octo track and map this midi cc to it's master volume..... I can't seem to find an easy way to do this. Any help would be appreciated.

Thanks