connecting an expression pedal?

Hello

I have a Boss FV 500 expression pedal and a liquid foot midi board. I am trying to get the expression pedal to work to activate the Wah etc.

i cant seem to get into the menu on the midi board to get to the XP1 menu to set the parameters for the pedal.

i then tried connecting the pedal to the fractal ultra to pedal 1. went to control menu enter source ext 1, auto eng to slow. pushed the pedal and still no movent on the display.

any ideas off how to get an expression pedals to work with the fractal ultra,? i would prefer to have the pedal linked to the midi board..
 
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