How do I Make a "back and forth patrolling" enemy sprite?

Been pondering this a while now. I just want to make a basic enemy sprite, which just "patrols" between certain coordinates. It could be as simple as just "patrolling" horizontally between (150, 0) and (300, 0) for example continuously until collision happens with player sprite.. Or vertically the same way. I thought this would be very easy, but there's something wrong with my logic, I guess.

I just could not figure this out myself :/ Any help highly appreciated Using the free version of Construct2.

Thanks!

Sine Behavior

Thank you, I'd never had figured that out myself. I guess I just have to try out more behaviors despite their names

Experience comes with time. Sometimes i'll start an empty project and spend a few minutes with a behavior or two.