You can try this if you want – I needed to add a comp to an algo I’m working on so just built Comp on it’s own with sidechain

The detector config is what you use to choose from different Input sources, stereo, mono or summed

Pop on USB Key and can import on H9000

https://www.dropbox.com/s/68cjt2x0cfs6clc/Comp%2BSideChain%201_4132979866.9ka-CompiledALGO.zip?dl=0

Let me know if any issues

Are you using Vsig for this?  Does Vsig work for the H9000?  I was using VsigX on MacOS but may need to format a computer with windows if Vsig is working for the H9k.