How to set focus?

I'm using this macro, but it's not working, just uses target not focus
anyone know what i'm doing wrong?

/focus target


all it does it make my target glow....

Are u just setting the focus target? Or do you want to cast on your focus target.

Use /focus to set the focus and u can use /cast [target=focus] spell to cast on the focus target without breaking ur current target. Can also use /cast [mod:shift, target=focus] spell
/cast [nomod, target=target] to use the same bind but with a modifier.... if that answers your question