Activating a script area

[Cruzore]

Nevermind, the real problem is:
the function has to be called OnPickup. So it's SetEntityCallbackFunc("tocarnellroomkey", "OnPickup");
and void OnPickup(string &in asEntity, string &in asType)
also, like andyrockin123 said, you have to use a if:
if(asEntity == "tocarnellroomkey")
{
stuff
}