[html-formfu] enhance form

[Josef Chladek]

hello,

I have my form-config in yml. my application checks if a user is  
logged on and is of a certain type, if so, the form should be  
enhanced with 4 select fields.
the rendered form has all the fields in it, but whenever the form is  
submitted,

$c->stash->{form}->param(xxx)

is empty - although I can see the param(s) in the catalyst body posted.
how would I do that?

thanks
josef