Ok, here is the solution: You need to open three controllers (Fader or knob) for this Action. Set all controller to Sysex.
For controller 1 (-Value) type in:
Sysex: 42 30 7E 41 11 00 64 00 V 7F
Min/Max Value: 63 => 127
Default Value: 63
Properties: 63 Ticks
Advanced: XFader Component
For controller 2 (+Value) type in:
Sysex: 42 30 7E 41 11 00 64 00 V 00
Min/Max Value: 63 => 0
Default Value: 0
Properties: 63 Ticks, Inverted
Advanced: XFader Component
For controller 3 (-/+ Value) type in:
Sysex: Nothing
Default Value: 63
Relationships: Supercontrol => Subcontrols => Drag to Subcontrol: Controller 1 and 2
Pedalboard: Finally hide controller 1 and 2
Finished!