Why doesn't this work?

[Storfigge]

Hey

I have a script box named "Sleep". Why doesn't the script work??

{
AddEntityCollideCallback("Player", "Sleep", "activate_sleep", true, 1);
}

void activate_sleep(string &in asParent, string &in asChild, int alState)
{
FadeOut(5);
AddTimer("T1", 10f, "Timer_1");
}

void Timer_1(string &in asTimer)
{
FadeIn(5);
}

Just get error... I've used pretty much the exact same script before without any problem.