GT-10B - 2 Effects controlled by Main Pedal

[EddieBass]

Hello,

I need some help here.
I have 2 different setting in 2 banks in my GT-10B:

U01 - Tremolo
U02 - Pitch

What I need:

When EXP Pedal is "Off" it plays the Tremolo Effect.
When EXP Pedal is "On" it plays the Pitch Effect.

But switching and mixing both while I step from OFF to ON.

I tried many things here, but didn't find a way to do that.

Can some expert in GT-10B help me out, please???

I really appreciate !

[EddieBass]

Anyone?