Homing missile to nearest target issues

Hey guys,

I'm trying to replicate DaveC's missile to nearest target example and I'm not sure what I've done wrong (doesn't allow me to link but I attached his example with mine). The missile angles towards the top left corner and it only lets me shoot once.

I'd appreciate it if someone could check mine out and figure out a solution.

Thanks for your time.

line 7, one tiny typo

http://s9.postimg.org/x94hi7a5r/Screen.png

also, to fire more missiles you need to count down global value A when it's >0 (see the global events in my example)

Wow. I don't think I would've ever noticed that.

Thank you so much!