Expression on vortex.

[Olivier Malhomme <malhomme@infobiogen.fr>]

I did an expession pedal with an old shaller volupe pedale costing nothing
and very old (made noises when used as volume pedal). I used a Y cord. It
worked perfectly. I dunno, I don't mean to insult anyone, but did you 
press the "tap" button before trying to use the pedal (it must stay lit)

Olivier Mlahomme