Add to the CUI "LISP Files" section using .NET

[Anonymous]

Is it possible to add lisp files to the CUI "LISP Files" section using .NET?

I can get the collection using:
var csMain = new CustomizationSection(Application.GetSystemVariable("MENUNAME"));
LspFileCollection lspFiles = csMain.MenuGroup.LspFiles;

And this to add my lisp to the collection:
lspFiles.Add(lispFile);

Unfortunately the changes are not saved and no lisps are loaded?

[Anonymous]

I should add that I'm actually referring to AutoCAD 2014 CUIX not CUI. Couldn't find a way of editing my original post. Apologises

[Anonymous · Accepted solution]

The solution was to use csMain.SaveAs(menuFile + ".cuix"); instead of csMain.Save();

Looks like there's a bug in the API