Several PERFORMANCES already have the FC7 pedal setup for use as a Wah-Wah pedal. The best way to learn how it is done is to study one of the programs that already has this programming done. Then you can apply what you discover to your own creations.
Call up "PedalWah Clavi FC2" - Clavinet with the FC2 pedal set to be the Wah Pedal... simply plug your FC7 into Foot Controller 2 jack
Call up "Oct Fuzz PdWah FC2" Crunchy Guitar lead with Fuzz Wah pedal ... again FC7 into Foot Controller 2 jack
Call up " DualCoilLeadWahFC2" Lead Guitar with Wah Pedal ... FC7 into Foot Controller 2 jack
In each case, the INSERTION EFFECT is set to "VCM Pedal Wah" and within editing Pedal Control = 0 and then within the CONTROL ASSIGN screen FootCtrl2 (source) is set to control "InsX PdlCtrl" (destination) where "x' is the Insert A or B processor.
In each case the CONTROL NUMBER for Foot Controller 2 is the default cc04