SOLVED: Can't figure routing audio to RYTM via OB

Hi all.

I’m wanting to route audio from Ableton to RYTM but I can’t figure it. Is it possible to do this without aggregating soundcards? I’d like to keep my RME as the master clock.

I’ve attached some screenshots. I go to the ext output on the audio bar in Ableton, select the RYTM MIDI channel as destination and select a sidechain pair but there is no audio showing on the OB desktop app.

Help ?

Ah so I found this little menu in the OB VST…