Thank's Taike, I will.
Did follow all steps in manuals there was to find when tried it on Pa4X, but no success....
I've sold the Pa4 (and the pedal), but did post a topic at Korg forums.
Hopefully there will be some replies with ideas about how to and what pedal that's the best choice for Pa5X. It's shipped and on the way, so will probably have it here during the week to come. 👍
Genos is a quite easy task regarding to pedal settings. Works like a charm!