Great. I’ve Made further progress. Can now choose which type of parameter to alter so can deal for example with with_fx :pan or with_fx ;reverb. I now have an example with three nested fx for pan, level and reverb and all are controlled independently within the loop at different times.
EDIT ADD
I’m also working on a touchOSC input controller for this. Initial experiments working OK, and so far I’m controlling the amp of a live_loop with fades up and down and “wave” remotely. Now working to allow several controllers together.