[web2py] Issue on 'The ajax Function' on web2py Version 1.98.2 - tested using WelcomeAPP

[Valter Foresto]

I checked, using the 'WelcomeAPP' on Version 1.98.2 of web2py, the first 
example of 'ajax' function as descrived on web2py book *'**The ajaxFunction', 
Chapter 10
*.
The returned value is always None instead of the expected echo of the typed 
characters in the input field.

Anybody experienced the same behaviour ?
- Valter