Gustavo: thank you for your observation. I have switched to a control that uses the Button function (with random numbers) and everything works perfectly for me. Goodbye forever to the Inputfield.

Thank you.

Haans: Yes, the .CDF file works with Wolfram Player, but because of the restrictions I have with it, I prefer to program without the existing restrictions.

Thank you anyway.

Hello Ernesto,

Check out the Input/Output table (second row) in this link: https://www.wolfram.com/cdf/adopting-cdf/cdf-and-mathematica-comparison.html

In summary, the InputField is probably disabled on purpose for your license . You can probably just change the control to a slider to make it work.

Saludos,

Gustavo