Question about drawing tablets and pressure

[already in use, literally]

Hello!
I was wondering if there was a way to make my lines change in opacity based on the pen pressure. I know I can make lines thicker based on how hard I press, but I'd rather have the opacity change instead of the size. I used to draw with a pencil a lot and it feels kind of weird not being able to press hard for darker lines anymore. Thanks.

[Lumigraphics]

[already in use, literally]

Right. Thanks.