I am having a problem using hidden() to generate hidden fields in forms. Here is a swatch of code to demonstrate my problem: 
#!/usr/bin/perl

use warnings;
use strict;
use CGI qw/ :standard /;

print hidden(
    -name => "foo",
    -default => "bar",
), "\n";

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When I run this code with the `foo' parameter defined, I get bad results. For example: 
> ./hidden.pl # the code above
<input type="hidden" name="foo" value="bar" />
> ./hidden.pl foo=123
<input type="hidden" name="foo" value="123" />

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The value of the hidden input changes based on the pre-existing values. I see that one can use hidden() to retrieve values but I simply want to define a new one at this point. The `hidden ( $name, $value )' usage functions in the same way.

Perldoc says:
Note, that just like all the other form elements, the value of a
hidden field is "sticky".  If you want to replace a hidden field
with some other values after the script has been called once youll
have to do it manually:

     $query->param(hidden_name,new,values,here);

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Destroying CGI parameters in order to insert hidden fields does not seem reasonable to me. There must be a bettery way. Is there a way to overcome this problem simply? And is there some reasoning behind the way things currently are?

Thanks in advance.

In reply to Hidden fields using CGI by narse

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