Just for anyone following up on this in the future, here is the response back from XLN on Addictive Drums and volume control using MIDI:

Thank you for contacting us. I'm afraid that Addictive Drums doesn't respond to volume cc (or any other cc data), but you should be able to automate the track volume on the Addictive Drums software instrument track in your DAW.


Win11, Intel i7 7700K 4.2Ghz, 32Gb RAM, 2x1Tb HD, 500Gb NVMe, BIAB/RB 2024, MOTU 828MK3 audio, MOTU Midi Express, Yamaha Montage 7, DX7II, TX802, Motif XS Rack, Roland Fantom XR Rack, Oberheim Matrix 1000, VoiceLive3 Extreme, Kontakt 6, SampleTank 4.3