Hi Nick,
I looked at your code and it's working with no error (so, I guess the problem is in my code..!?).
It's not exactly what I want to do. I'd like to change your code but I don't really understand it. There's no information about the Format Alarm Data.vi so I don't know what it's doing exactly. Also, I have no idea what is a Refnum.
But thanx anyway, I hope I'll find what is the problem in my code.
Stephanie