Hello Víctor,

Numeric fields - come from the database, not the result of an expression, summary, etc, right?

Then you can use print_if with SQL expression in the format:
field_name > 0

Like on the screenshot.

Thank you very much Sergey

Yes, I had already tried using the "print_if" ` expression because it seemed like the most logical function for what I wanted (and is very similar to what I did in Crystal Reports for Visual Basic), but it gave me a strange SQL error that I did not understand...
But seeing that you advised me to use that expression, I examined the error further and managed to solve it. The problem is that in the list I use 2 tables that are linked and I had a field that was called the same in both tables... and that was the error that was causing me in the Query SQL. I have changed the name of that field in one of the 2 tables and the problem has been solved !!!. It was a mistake on my part.

Thank you very much for your help, because it already had me desperate

The truth is that every time I like Valentina Reports more and more and I find myself happier with the product.