Can someone explain how to use @set and @ifset together please? I'm guessing @ifset:BACKUP=AAAAA is the problem in the code below. I've also tried @ifset:$BACKUP=AAAAA but that doesn't work either.
Completely unrelated features... The help for the @ifset modifier explains it pretty well I think, though I can understand being confused by the common NAMES of these commands, etc... but:
The @ifset modifier let's you check the values of various options that you can set using the "Set" command... like the current view mode (details, tiles, thumbnails, etc)
The @set modifier lets you assign values to variables that you can then use elsewhere in the same button/hotkey...