Hi @dnevill thank you! I installed VS2019 again, I compiled and runned B1 example and it looks like to work.
Now I’ve to modify the B1 example (I started to do it in november but given that I had to do another work, I didn’t continue do to it). I don’t know if you remember, but I had problems to delete the shapes (you were helping me). Please, can you check it How to modify B1 example ?