CONFIRM argument for Set command

I try help example Set EXPANDABLEFOLDERS=Toggle CONFIRM but no confirmation is display.
Normal ?

You may have already clicked the option to stop showing the message:

image

/dopuslocaldata\State Data\confirm.osd might look like this:

<?xml version="1.0" encoding="UTF-8"?>
<confirm>
	<show_splash_screen ask="no" />
	<exit_warning ask="no" />
	<perlister_folderex ask="no" />
</confirm>

Delete the perlister_folderex line and save the file to make it ask again the next time.