I'll explain my problem:
I use my Nord keyboard connected to ipad to use apps like Sunrizer and iSymphonic, to create amazing layers. But it happens that the Nord sustain pedal sends the midi message also to the app and, with Sunrizer and Isymphonic, generates a great confusion. The two apps do not allow (I think) to block CC messages, and on the Nord I tried all the options in the MIDI menu but without success. What do you think I can do to filter the CC to send and those to block on the iPad?