[Solved] How do I... Choose from 2 set values

Every 3 seconds I spawn a bullet. I either want that bullet to have a gravity of -90 or 90. Nothing else. How would I do this?

System - Every 3 seconds : sprObj | Set Bullet Gravity to random(-90,90)

That is very close, but I need the return value to be *only* one of those two, not any value in between.

choose(90,-90)

Brilliant! Thank you so much!