Using Scripting? I don't think you meant that, but that's the forum you posted this in. Next time, post in the general InDesign forum.
Oh -- and (perhaps hard to believe) just about everyone posting in there needs help of some kind. You might want to use a more descriptive title next time.
The Good News is that InDesign doesn't need nothing special for "perfect binding". The person that needs to get this information is your printer. You won't have to change anything at all in your document.