Repeat AppleScript

I'm not sure what you are doing - putting the computer to sleep will pause the application. You can use a timer to repeatedly call a handler/method or run it after a delay, for example:

setmyTimertocurrent application's NSTimer's timerWithTimeInterval_target_selector_userInfo_repeats_(1.0, me, "someHandler", missing value, true) -- create

current application's NSRunLoop's mainRunLoop's addTimer_forMode_(myTimer, current application's NSDefaultRunLoopMode) -- add

- or -

performSelector_withObject_afterDelay_("someHandler", missing value, 1.0)

Note that you should avoid things like repeat statements unless you are periodically handling system events, otherwise the UI will get blocked.

Your posted script does nothing except put the sytem to sleep if a certain disk doesn't exist. There aren't any other handlers to repeat whatever it is you want to repeat, and there aren't any outlets or actions for user interface objects - what are you trying to do?

You don't necessarily need to use a repeat statement, you can call a handler that will do something and then sets a timer that calls the handler again, for example:

ondoStuff()

-- do something

performSelector_withObject_afterDelay_("doStuff", missing value, 10.0) -- do it again in ten seconds

enddoStuff

This also has the advantage of not blocking the user interface (buttons and menus still work, etc).

It would also help to know what you wanting to do, since there may be other things that can be used (getting a notification when a disk is mounted or when the system wakes up, for example).