It is easy enough to scan the CAL directory and see if something looks like a candidate script. I have not run it but C-NTROLR.CAL has the following embedded comment:
;;; This is a CAL program that allows the user to change data for any
;;; controller using addition or subtaction of a fixed amount, a high
;;; and low boundary, or a percentage.
;;;
;;; NOTE: This program automatically deletes any consecutive duplicate
;;; controller values that are on the same MIDI channel.