Interior Cell, Outdoor Lighting

[morgananinuala]

I'm looking to use a custom weather indoors, and I have the weather created, but I see no way to get that weather as lighting in an interior cell.

 

Now, in Skyrim, when you want to use an exterior lighting in an interior cell, you select Show Sky and Use Sky Lighting, but you select the sky from a list of regions, and even when I make a new region with my custom weather, it doesn't show up in the region list in the drop-down menu for Sky Lighting.

 

Does anyone know what I'm doing wrong?