prototype Ajax.updater doesn't work?

[eluser]Unknown[/eluser]
Hello every body,

I've been following the tutorial of the paging with CI with Ajax + prototype
http://codeigniter.com/wiki/AJAX_Paginat...n_Library/

Everything works except that the links to go trough the pages dont work.

the link is like that;

Code:

[code]ef="#"  onclick="new Ajax.Updater('content','index.php/my_data_page/',{method: 'post', parameters:{page:4}, evalScripts:true}); return false;" />2</a>

[/code]

Using fire bug to see what's appening. When i click on a like there is effectivily a post request to the right page but there is nothing in the POST (yeah with firebug u can see the content of what has been posted... nothing)

So i would like to know if i missed something ?

thanks