Should be an easy fix

[Obliviator27]

The if statement would be used in your .hps.
void MansionDoor(string &in asEntity)
{
if(GetSwingDoorLocked("DOORNAME"))
{
SetMessage"Messages", "MansionDoor", 0);
}
}
What this will do is check if the door is locked. If it is locked, it will set the message. If the door is unlocked, nothing will be displayed on-screen.