enemy issue

I was following this tutorial on how to make my snake enemy change direction once it hits the edge marker, but once it hits the right edge marker, It changes direction BUT it changes back the other way and walks through the edge marker. I don't know what I'm doing wrong =/

<img src="http://imageshack.com/a/img29/7122/llfi.png" border="0" />

is the object's collision "on" in the properties?

didn't realize your post was a question. Yes, The edge marker has collision.

What happens when the action is set to "right" or "left"?

That's what happens. did exactly as the tutorial said.

<img src="http://imageshack.com/a/img850/7500/a6bi.jpg" border="0" />

The setup seems correct, so the problem seems to lie elsewhere.

Maybe your enemy's collision polygon causes it to colide with the edgemarker again when set to mirror, but I couldn't say.

*facepalm* that was basically it, thank you. I just repositioned the collision markers on the snake sprite around the head INSTEAD of covering the tail as well. The Tail was making it screw up as it collided with the edge marker.