[SCRIPT] Newbie problems that are driving me crazy!

[GoranGaming]

void OnStart()
{
SetPlayerInteractCallback("door", "InteractDoor", false);

}

void InteractDoor(string &in asEntity)
{
if(GetSwingDoorLocked== true)
{
SetMessage("Category", "Message", 0);
}
else
{
//Do nothing
}
}