Piece of Cake, Go in to the Controller/Surface and setup an ACT midi contoller with the inputs set to wherever you pedal comes from (midi wise). Then, hit Controller/Surface Properties. At this point you have to bring focus to Gtr rig by clicking the Gtr rig GUI. Then, click back to the ACT Controller/Surface properties. click Lock to lock the focus on GTr Rig. Then, Search for the Real Wah Pedal (Bank 1, R1) sometimes you have to dig. Click the Real Wah Pedal button, it should now say, "midi learn". Now, wiggle your Expression Pedal and you should see Real Wah Pedal % going up and down. You're halfway there. Next, Click the 'W' located in the track view or the one in the Gtr rig gui (top right), the 'W' will turn red. Finally, hit Play and Wah Wah your heart out without missing the Golden Wah Take. You'll see your automation being recorded. As of X1 there's only one take automation envelopes so you'll need to duplicate the Audio track with Gtr Rig without the events to record another separate take without over writing your previous automation. X2 could possibly help that if X2 actually works. Cool thing is once you recorded the automation you can manually adjust later... FUN!