[Closed] Selection in viewport updates the selection in multilistbox

have you tried searching before asking?

Of course, I understand that everyone is in a hurry, everyone is busy, that answers are needed right now … but three or four years ago, asking about a solution without showing your own attempt was kinda indecent.
That is why, I just go to this site out of habit, almost not hoping to find something new.
It’s not Reddit, it is actually a site for professionals…or was.

Thanks for answering

i´m new in the maxscript, and i searched in the internet for this but no success, that is why i came here .