Thank you for your answers,
I finally looked at your tutorials (except those on the families of rooms)
I think that I should not have integrated the dimensions into the names of the parts, given the many modifications they undergo.
So I use the "summary of the properties of the document" or next to "name" I will click on my dimensions to show under "name" "X" x "Y".
So this already largely solves my main problem.
On the other hand, still in the same field, I regularly have dimensions that are not displayed in my welded parts list tables...
I choose a profile that I put on the sketch of an upright of 1300 high, and the dimension is not displayed in the table of welded parts, do you have any idea where it can come from?
Thank you for your help