it's actually more probal the problem is mine.
i come from c4d and after 10 years is difficult to change habits.
but I'm trying.
file attached, it's probably a big mess, so any tips are appreciated https://www.dropbox.com/s/780g7vzlax4fwpe/stairs.zip?dl=0
anyway, I applied the material at the RC object but I don't see any projection, and it appears only if I put the uwmap modifier to the RC object.
is this way to proceed wrong?
should I work on the original asset, putting the correct projection on it and evetually work on the RC object?
sorry for the silly questions