How do i make the Sanity script?

[Clear]

You would have to set up a CollideCallback, which calls the function GiveSanityDamage. Like so

void OnStart()
{
AddEntityCollideCallback("Player", "RoomArea", "SanityDamage", true, 1);
}
void SanityDamage(string &in asParent, string &in asChild, int alState)
{
GiveSanityDamage(10, true);
}

Thanks!
But i have a problem while putting the script down the HPS file, when i put it and load the game it gives me an error wich says function with the same parameters allready exicts... i have 2 void OnStart() in 1 HPS file, is that suppose to be like it?
One of it is for a key & door script, what do i need to do?