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① Use the expression pedal to control the wah. Connect the expression pedal to Pro, enter the BIAS FX main page, open the wah pedal, and right click on it.
② Then click MIDI/Automation to open MIDI specification.
③ Click “MIDI LEARN” at WAH to start MIDI specification, Waiting for MIDI CC appears on the screen. Press the expression pedal, then MIDI function is
successfully specified.