What event is that in? on TEXT? Keep in mind that if you're using on TEXT, others can trigger it, but you cannot from the client running the script. That may be your problem?
As for the things you said you also tried... you cannot put {}'s touching anything else... you'd need spaces for those to work. And . before msg or anything else just silences it so you don't see it on the client running the script -- in the case of msg, others in the channel would see it, but not the client running it.
Also, you don't need /'s in scripts. Using them won't cause a problem, but it's unnecessary.
