How do I map a filter in Omnisphere to my MainStage patch?

To map a filter in Omnisphere to your MainStage patch:

1. Right click the filter, then choose enable host automation if you are mapping the Omnisphere filter to a fader or knob.
2. Then map it as you would any stock plugin control.

If you're wanting to use the mod wheel, use the mod matrix in Omni (the "wheel" responds to MIDI CC1 [modulation data]).