Setting one of three variables randomly

I’m creating a semi-simple FPS game, with randomly selected gun stats. I’m currently trying to have code to set one of three variables, in this case Burst, Explosive, and Damage. I can have all three as Boolean. Here’s the choosing code I first tried, in highlight. it doesn’t work, it just “chooses” the top one, in this case burst.

Alternatively, all three are Boolean:

I need the code to randomly toggle one of those three values. they all start as off.
Let me know if there’s anything else you need. I just need code for the choosing, I’ll figure out the other things.

If you need to pick 1 perk out of 3, use an enumerator:

You can create them in the content browser, under Blueprints. No need to get tangled with branches here.