Swell pedal setup can be seen in the file with that name.
Midi messages when watching can be seen in swell pedal message.
Regardless of the message sent ( 0 thru 127 ) the output level being sent after translaton is 4
You are setting incoming pp from your controller number (4) not the value of that controller.
Change it to look like the attached screen shot.
Bome Customer Care
Also available for paid consulting services: email@example.com
Thanks for solving that large booboo.