IWT Trouble

[Endtrue]

Hello! I read a lot forums and manuals. Immediately I'm sorry for the language, because I'm from Ukraine.
I use AHK to duplicate the clave. And the question arose in the interaction with target. The fact is that at first it worked ... Then .. After another run wow ceased. If a window with a slave toon is active, then when you press button the toon runs and looting .. But if you switch to the slave masters, it breaks down.

I hope very much for your help