Screen.sleepTimeout does not work

I tried this on a droid x and samsung galaxy so far both still turn off the screen

Screen.sleepTimeout = SleepTimeout.NeverSleep;

anyone know any tricks to get this working or is this a bug ?

was just about to submit to google now this happend

OK wierdness, i had it in start and it did not work move it to OnEnable and it works now moved it back to start and it works