Hi, at the moment there is no way to customize the MIDI message to parameter mapping.
This is a real problem for me. I’m using a Akai EWI USB breath controller with the iOS plugins, and both CC 1 and CC 2 are (by convention) used for the bite and breath sensors, respectively. While I am able to replace these with different CCs, I already have a lot of presets (in other plugins, etc) that assume CC 1 and 2 are for bite & breath, and all of these would have to be reprogrammed. Not the end of the world, but a headache. Couldn’t you at least have chosen CCs that are less commonly used? And is there any chance the option to set different CCs could be added to the plugins?