Hi Antoine,
Thanks for the reply. You're on a PC, right? I'm on a mac, so for me, I hold down the Command key to assign a midi controller to the hold function. If this is what you mean, then I already mentioned in my initial post that I tried this, but it behaves oddly. When the dialog opens and I press the Learn button, it will accept things like the mod wheel, foot pedal - any continuous controllers. But, pressing the sustain pedal has no effect. The dialog says it's Learning... and won't accept controller 64. Likewise, manually assigning a continuous controller works fine, but the prophet ignores the sustain pedal even after I've manually assigned it. I've got a midi monitor set up up and the pedal is working fine. Plus, the pedal works with everything else, including your other products. I just launched the JP-8 and the sustain pedal works without any trouble. Is there some reason why the prophet would ignore switch type midi controllers?