mapping problem in FX

mapping problem in FX

I am trying to map the FX unit on, w/ dry/wet adjust value=1.000 but when I press the button, it sends dry wet to 0 the first press then I have to press it again to make it go back to 1.000. Am I missing a modifier or something?

Missing ‘FX Store Preset’.

That’s what I thought, thanks man.