How do I make a character run away?

I have an enemy in my game who is supposed to run away from the player and shoot from a distance. I implemented the moveto behaviour but added some code i found on the forums to make it run away, but it just walks through walls. i havent added the shooting aspect, but i cant stop it from moving through walls. i can give the .c3p if anyone needs

Could you post a screenshot of the enemy's properties?

Pushing away from obstacle example: dropbox.com/s/elew687p4kdy9of/Avoid_Obstacles_PUSH.capx