I'm trying to figure something out here that could be pretty easy but I'm not sure. I've watched the tutorial by Steve H about using transformers to change fader and controller info in Stylus RMX so you can use midi channels to control that sliders and knobs but I'm wondering how to do the same thing with Omnisphere. It doesn't seem to function the same as RMX. Basically, I'd like to have 8 midi tracks in my arrange window and when I adjust the volume slider for say track 3 it will adjust for track 3 on Omnisphere. Is this possible and or easy? thanks.

To control the volume on individual channels within RMX and Omnisphere you need to automate CC#11. The usual CC# for volume is 7 but in this case using #11 is the Expression control. In the Automation drop down menu you'll find it there.