Daisy Seed + gen~: LED brightness from button hold (no Codebox)

Francesco Mulassano's icon

Hi! I'm currently learning by following tutorials, the Go book, and various videos.
I'm working with the Daisy Seed (through Cosmolab) and I need to change an LED's brightness from 0 to 1 based on how long a button is held without using Codebox.

Is this possible in gen~ using only objects? Do you have an example?

Thanks!