How and where to I program curves

How do I program curves on a PBF4 slider? I want to have expression control for a string library in a sequencer and the slider should behave like an exponential curve slider. Is this possible and where I have to add what (I am very new to programming this thing). Thanks in advance.

Hiya!

We have some example profiles on the Profile Cloud, you could search for “logarithmic” or “log” faders and should show up.
And we had a really nice thread about them on the forum as well, check it out: Implementing fader curves/crossfades using LUA