SOLVED : Set Metronome to single knob controller?

I see in the bindings I can set the Metronome to a knob, however it seems I cannot have tempo up and down set the the same knob. I am sure it’s possible (haha everything else is in C3 :wink: ) I am just setting something wrong.

EDIT: Yep doing it in totally the wrong place… did the MIDI learn on the actual tempo slider and that did it!