Ikea styrbar button

Hi Im kind of new to smartthings and I’ve just installed a custom dh for the ikea button.
I cant, really program it like i would like it to behave. It’s a 4 button device with “push” and “held”
When I hold the button i would like it to dim the lights from 0-100 but how do i do that?

I think you need to do a direct binding. ST doesn’t allow for such behavior