Can OT summon MD kits using program change?

[apmbpm]

Change Kit or Sound via MIDI message?

Good evening. I’ve been searching through for a solution to this issue/problem/lack of ability (my own!). I wan’t the OT to tel the A4 what patch to use for the pattern I am sending from the OT. I’ve got the MDID NOTE SETUP page with the channel/Bank/Prog. Channel works fine as the pattern from the OT is playing; can’t get the patch to change though. What am I doing wrong? The searches I’ve made suggest issues exist with this, but surely OT to A4 must work?!