[Zhao Yitian]

Dear MCR,
Thanks for your message. Normally you should set the polyphonic aftertouch to control message in the Kontakt software. I am not so familiar with Kontakt, so I will ask our people to check for you. In the meantime, you can join our FB user group to ask, I think some of our pro users may help.
https://www.facebook.com/groups/CMEXkeyusers/