Thanks Ralf for you answer.

I tried to upload the file, but I get a 500 - Internal server error... maybe is too big (is a house).
Anyway, is not worth to find the problem in this particular situation.

What is more important for me is to understand if I'm doing something in a wrong way, not to do it again, or if is just a little problem of the boolean that I will have accept.

Thank you very much again

Eugenio