The PitchFlex algorithm is automatically mapped to use the expression pedal. Your minimum values (Heel A – Heel B) are assigned as knobs and your maximum values (Toe A – Toe B) are also assigned as knobs. This means that you do not need the ribbon control since you are mapping your min and max values with the assigned knobs. You can set the glissando speed ascending or descending as well.
The FlexSwitch is automtically assigned to sweep from the MIN to MAX value.
Hope this helps!