Tapping into Harmony device control s

I have an AVR with two zones. The second zone has volume buttonz on the remote and in the Harmony app under device. Is there a way with webcore or other SApp to hook into that command so that I can program the volume controls without using g the Harmony app or remote?

It’s not that easy to control individual devices through your harmony hub outside the context of activities.

This is the only method I’ve heard about. You’ll need to be comfortable working with a raspberry pi.