Despite that Help says:
[BACKFOLDER]position[] returns just the folder in position Count-X from the source path
the string [BACKFOLDER]0[] on a two-folder path doesn't return the second folder. It returns an empty string.
Workaround: [BACKFOLDER]1[]
[BACKFOLDER]position[] returns just the folder in position Count-X from the source path
the string [BACKFOLDER]0[] on a two-folder path doesn't return the second folder. It returns an empty string.
Workaround: [BACKFOLDER]1[]