Greetings
@davide_formi You are not doing yourself (or anyone watching your video) any favors by keeping your commandline at only 1-line tall: make it 5-10 lines long and see if your AutOCAD is explaining what it is selecting, how many, and what other things are going on. To me it looks like you have many lines over each other, not just the three green ones you select: not seeing any blocks selected at all either.
