[Htmlunit-user] How to add hidden fields to HTMLForm?

[Ritesh T. <ru...@ya...>]

Hi,
 
I have a requirement where I know that the server takes an "optional" hidden field, when set to certain value, the resoponse changes. 
 
The problem is, its undocumented field and is NOT included in the form, so I need a way to add hidden field to the existing form with the desired name/value.
 
How do I do that in HTMLUnit?
 
Thanks
Ritesh