[SCRIPT] My locked door doesn't display a message?

[KingCrimson]

I was using one of the tutorials at the wiki because i want a locked door to say "The lock's broken". But when i try to open the door, it doesn't display anything... Here you've a copy of my script:

void lockedoor(string &in entity)

{
if(GetSwingDoorLocked("locked1") == true)
{

SetMessage("Messages", "Broken", 0);

}
}

Some info that might be useful:

PlayerInteractCallback
Door's name
Category at extra_english.lang where the messages are
Name of the message

Thanks in advance...