I want to mod Gob's dialogue so that he gives you the map marker for Underworld when he says "A place called Underworld. It's a ghoul city down in DC. I set off up here to find adventure and fortune and, well, I found this place. / I'm sort of stuck here. Colin says that I can't leave until I pay off my debt to him. Of course, he charges me room and board, too. / If you ever get to Underworld, tell Carol I said hi."

I went into the dialogue files for the caravan merchants, because I know they give you the map marker for Canterbury Commons in dialogue. The result script I found in their dialogue was "showmap CanterburyCommonsMapMarkerREF". But attempting similar result scripts on Gob ("showmap UnderworldMapMarkerREF", "showmap MuseumOfHistoryMapMarkerREF", etc.) never produced any success.

I'm unsure of where to look on the wiki to find answers for this (searches such as "dialogue", "result script", and "map marker" didn't produce anything useful), so I figured I'd ask here.

Well http://cs.elderscrolls.com/constwiki/index.php/ShowMap is correct. The linked page shows you what the parameters do for it. As for the actual name, that is what I think your putting in wrong. Let me look what it would be real fast. (several minutes later) Ok if you look in the exterior worldspace DCworld09 in cell 16,-9 MuseumAmericanExterior you will find the map marker is called MuseumAmericanMarker. So put this line in the result script box for Gob's line of dialog (note: editing vanilla content leads to higher changes of conflict between your mod and others. while doing so, caution is advised.)

ShowMap MuseumAmericanMarker

This will make it show on the map, but not be able to be Fast traveled to without discovering. if you want to be able to instantly fast travel to it, do this line instead.

ShowMap MuseumAmericanMarker 1

Gunmaster95

NEVER MIND! Apparently, "CanterburyCommonsMapMarkerREF" was the reference editor ID of the actual physical object of the Canterbury Commons map marker. I went and checked the reference editor ID of the Underworld marker ("MuseumAmericanMarker"), and sure enough the script "showmap MuseumAmericanMarker" worked!

EDIT: I see someone answered my question in the time it took me to figure it out myself and make this post. Thanks anyways!

>.> Glad you figured it out