@tig said:

It works fine for me in v2022, with the simple .dup edit...
Are you following the instructions exactly - e.g. editing the correct file, then saving it and restarting SketchUp.
Its entry is in the Edit menu and should be 'ticked'...

Thank you, Indeed it works. I've made a mistake, mea culpa.

Very kind of you, Sir. Thank you.