Motor won't stop on endstop (1 reply)

Hi, i've just finished assemblying my Prusa i2 and i'm having some problems about the endstops.

It doesn't stop when hitting the endstop. I'm using Ramps 1.4 with arduino and i've putted both X and Y opto endstops on the oposite side of the motors. I've changed some things on configuration.h so that the directions were as i wanted but now i can't seem to work this out.

Can anyone help me sorting this please.

Thank you