A Time Counting Command?

[BALA 0]

I'm programming a simple Reflex Test game where you are suppose to let go of a key when you think 30 seconds has past by. If you were off, it'll tell you how much. Anyways, is there a simple command in AutoIt that will count how much time has past? I could always use a loop that will subtract 1 from a million each time around, but was hoping if there was a simple command that will do it fro me.

[Uten 7]

Type Time in the index of the helpfile..

[BALA 0]

TimerDiff ?