[Zubersoft]

That is a MIDI pedal I'm assuming, so you have to go to Settings->MIDI Settings->Configure MIDI Connections, switch to the Google library, switch to Bluetooth and then connect to the pedal. Next, go to Settings->MIDI Settings->MIDI Actions, tap the + icon, set the action you want to be triggered and then tap the + icon to add a new MIDI command to listen for to trigger that action. You can use the MIDI listen dialog to figure out what message is received when you push a particular switch on the pedal. Tap OK once you have the MIDI message(s) set up, then you can load a song and test out the action for that pedal switch. 

Mike