The Modifier MIDI plug-in lets you quickly reassign or filter a single continuous controller (CC). You can also scale or add to event values.

Modifier parameters
Input Thru button: Define whether or not the input event is sent to the output in addition to the reassignment.
Input Event pop-up menu: Choose the type of MIDI input event that you want to reassign or filter.
Re-Assign To pop-up menu: Choose the type of MIDI output event. If set to Off, the event type chosen in the Input pop-up menu is filtered.
Scale slider: Set the scaling amount for the output event type chosen in the Re-assign To pop-up menu.
Add slider: Set the offset amount for the output event type chosen in the Re-assign To pop-up menu.