@lokki no, I said it I don't want it to be polyphonic, that's not my point...
Look at this :
The touch plates I'm trying to reproduce is on the top right of the keyboard, the four little metal rectangle, the 4 poti at this place are the pitch of each touch plates. Do you see when he play a note on this four touch plate, a red led start to lights ? It means this plate is working on the pitch of the oscillators. She is like sustained. So he can act to the pitch of this one to tune the oscillators, but the 3 other poti can't change anything because they are not active.
This is my difficult on my patch... I want to have a monophonic keyboard with only 3 key, wich I can choose the tune of the monophonic key I'm playing.
It's hard to explain it but because of my not quite good English (I'm a French frog...)
But to be honest it's not a really important problem, I'm okay with my patch, I was asking if somebody find a way to do it, but if it's not, that's alright