Random Directions

So in 3-2 there is an arrow changer, It’s supposed to make the enemies go either up or down. But for some reason the enemies do neither.
Can someone figure this out?
Here’s my game- https://flowlab.io/game/play/1116489

This is because attached objects don’t have collisions, because the are stuck on what their attached to. I recommend using a Raycast or a Proximity.