Thanks you for the reply. I'm very new in this world. I don't know how to set a global variable (it's a incoming on an outcoming?) Please help me, can you describe me the process i've to do to this? Thank you so much!
Edit: I tried to do that but i had some problems. I've made a preset with the shift on/off state: when the button is pressed it calls another preset. But when i go in Ableton to assign the knob he recognises it as another knob but when i move it with the shift button pressed also the original knob moves together with the "shifted"...What i've to do?
Help me!