Numeric input check

[Millman]

Hello everyone, I would like to know if you can give alerts through writing.
Ex: if a box is not a number is entered I would like to warn the user that did not include a number.
With all messages.
thanks

[tom_g]

Hi Millman,

here you are.

I have merged a piece of code from breitech "tnx".

Good weekend:
Thomas

[Millman]

thanks!!!!!!!!