To complete part of a faction currency mod I need to change the "caps" strings displayed on the Barter Menu depending on the currency being used. However, figuring out how this is accomplished is frustrating as the user-interface tutorials seem scattered, mostly focused on Oblivion, and slightly overwhelming for what I am trying to accomplish. They also seem to be tied to certain mods (such as DarNified) for some reason? I'd prefer avoiding additional requirements if possible.

If there's a comprehensive FO3/FNV User-Interface Tutorial 101 I'd greatly appreciate being pointed in the right direction.

Comprehensive tutorial... I don't think there is one. It's one of those things you just jump in and play around with.

To do what you want, use the SetUIString NVSE function in MenuMode 1053:

SetUIString "BarterMenu\NOGLOW_BRANCH\BM_CapsFlow\BM_CapsLabel" "New String"

Awesome. I knew that I had to use SetUIString but didn't know which arguments to pass.

Thanks a lot.

EDIT: Celebrated too soon. I don't see any changes to either the inventory list headers or the amount transferred display. Is "BarterMenu\NOGLOW_BRANCH\BM_CapsFlow\BM_CapsLabel" the wrong argument are is there something else I need?

Oops, I forgot to include which parameter. It's actually...

SetUIString "BarterMenu\NOGLOW_BRANCH\BM_CapsFlow\BM_CapsLabel\string" "New String"

SetUIString "BarterMenu\NOGLOW_BRANCH\BM_CapsFlow\BM_CapsLabel\string" "NCR $"

No luck with the above either. Does it work in your game?

It works fine for me. I even copied and pasted the exact line you have there.

Are you using anything besides NVSE?

No, I don't think so. Here's the code I used to switch it. The iString variable is there so it doesn't apply every frame and kill the FPS.

short iStringbegin MenuMode 1053	if iString != GetUIFloat "BarterMenu\NOGLOW_BRANCH\BM_CapsFlow\visible"		set iString to GetUIFloat "BarterMenu\NOGLOW_BRANCH\BM_CapsFlow\visible"		if iString			SetUIString "BarterMenu\NOGLOW_BRANCH\BM_CapsFlow\BM_CapsLabel\string" "NCR $"		endif	endifend

You were probably using at the wrong time. To modify values in any menu, it has to be active at the time you're doing it. Also, after closing it and opening it again it will be reset. The script Pelinor posted already accounts for both.