print $query->hidden('name', 'value' [,'value'... ])Generates a hidden text field.
The name to give the value (required).
The value to assign to name. Multiple values can be specified.
Using named parameters, the syntax is:
print $query->hidden(-name=>'name',
                       -default=>'value');print $query->hidden(-name=>'name',
                     -default=>['value1', 'value2', ...  ]);