Sergio W. Del Valle

Ooops, sorry my hint won't work for displaying a different message for each field.

Here's a simpler solution using resource bundles, don't worry if you're not using the JSC2 IDE, the files involved can be edited and/or created on whatever IDE you're using.

http://developers.sun.com/prodtech/javatools/jscreator/learning/tutorials/2/custommessage.html

Maybe you should take a look at the How to Use Virtual Forms tutorial in the SDN.