Multipage manipulating input values

Hi
I got a little problem with a multipage form (1st page form, 2nd page preview with manipulation, 3rd page submit).
As example I got in my form 2 fields:

<input type="text" name="birthday">
<input type="hidden" name="age">

on the 2nd page I calculate the age and save it again to the form values in custom code (controller):

$timeZone = 'Europe/Zurich';  // +2 hours
date_default_timezone_set($timeZone); 
...
$foo_age = date_diff($form->data['birthday'], $calcDate);
$form->data['age'] =  $foo_age->y;

If I show the values with the debugger on this page (2nd page), I see the correctly calculated age in form array.

Now I submit the page and want to save the values in DB/Email and PDF.
In all 3 events, the {age} is again empty.

Any ideas how I have to manipulate the data on the 2nd page, so they stay saved in the on submit page?

Thanks Pawel

Hi Pawel,

Do you have a hidden field named "age" in the 2nd page ? if yes then can you test with a debugger in the 3rd page?

Also please add a "value" attribute for the fields code!

Regards,
Max