Latching switch issue

[Sibob]

I have an octave effect on my Ashdown that is controllable via a latching footswitch.
I purchased a generic latching footswitch that is similar in form and function to the Boss FS-5L.
However, when plugged into the back of the Ashdown and the pedal unlatched (red light off), the effect is on. When the pedal is seemingly 'latched' (red light on), the effect is off.

What do I need to do to swap it round so that when the red light is on, the effect is on?.

Cheers
Si

[cheddatom]

swapping the wires round on one end of the jack lead should make it act in the opposite direction, I think!?

[Sibob]

Sorted
Apparently it's the polarity switch that swaps around the functionality.
Typically the cheaper pedal I bought doesn't have such a switch, so I exchanged it for the Boss equivalent which has said switch, and voila!

Cool
Si