How do I activate the progress bar?

Hello, I inserted a progress bar in my level 1 layout and I want the progress bar to go down when the player collides with the unhealthy food. Can anyone help me figure out how to activate the progress bar?

Here's the project: https://drive.google.com/file/d/1H0dgP75UHYS514VCqPeTkQu2PkvjBRCz/view?usp=sharing

Thanks!

Thanks. I was trying to use the progress bar that's already a built in feature on Construct 3, but this can work too. You have yours set up so that the progress bar comes up only when it first collides with an object. Can you have it show the full bar before the collision and then each collision makes the bar smaller as you have it?

Thanks again for your help!