void main()
{

object oPC = GetEnteringObject();

 if (!GetIsPC(oPC)) return;
 int DoOnce = GetLocalInt(oPC, GetTag(OBJECT_SELF));


if (DoOnce==TRUE) return;

SetLocalInt(oPC, GetTag(OBJECT_SELF), TRUE);

   SendMessageToPC(oPC, "Hmmmm, best not hang around in here, that door could close at anytime!");


}