I have problems getting Gigperformer to talk to buttons in keyscape - eg Reverb amount.
The Sound is playing - so far so good.
Im following directions for mapping of buttons from one of the tutorials on YouTube, but I dont get any results
This is an Omnisphere issue, not a Gig Performer issue. Not sure what youtube video you’re watching but as far as I recall, you have to explicitly enable host automation on parameters in Omnisphere before you can access them from Gig Performer (or indeed any DAW).
Hi @madsgranum, welcome to the GP community forum. 
Have a look here:
Focus your attention to host automation with Keyscape and forget about MIDI learning with Keyscape.
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