How can i morph between two values in a core macro?

Hello!

Im fine tuning the filters in my custom synth.

But i'm having a problem where id like to set the maximum and minimum value for a port inside a core cell, so that when i twist a knob, the value traverses only between these two values.

I know i could do this directly in the knob... but you see... im using a single 0-1 knob to control multiple cells so i cant adjust it there.

Can you guys point me int he right direction to achieve my goal?

thank you. very much.