How to ignore part of incoming sysex for matching purposes?

[Thom]

OK, thanks for your help Steve.

I think my reply in this thread covers what I still need to clarify:

Best way to process a sysex patch dump?

Hi, I’m just starting a project where a sysex patch dump will be initiated from a synth and I want to use MT PRO to process that and construct a number of NRPN parameters and values which will be forwarded on to a controller, to initialise its encoders at the correct values for that patch. There are about 50 values to process. I also need it to go back the other way and convert NRPN parameters to sysex, sent on to the synth to change the patch parameters. Are there any any general rules, or b…