what i would like to do is in the pedal switcher have my 4 distortions that i wantIf I understand correctly, you want to run the Pedal Switcher in the GT 8 External FX Loop and connect four different Overdrive/Distortion pedals to the Pedal Switcher. It's also my understanding you want to control the Pedal Switcher via MIDI signals sent from the GT 8 to activate/deactivate the different OD pedals, which you will assign to corresponding GT 8 presets.
so I put the pedal switcher in the external loop of the boss gt 8 and with the midi connection i can call either i want distortion 1, 2, 3 or 4 according to the presets thats what I would like to do
Unfortunately, I can find nothing in the GT-8 manual indicating it can transmit the required MIDI SysEx messages John Clark referred to in his post, so I do not think this is possible. What you need is a looper that respondes directly to MIDI Program Change information, such as Payne Labs K-Switch, RJM's Mini Effect Gizmo, or WOBO's MIDI Looper4 to name a few.