I am confused about this statement

@array_and = 'AND'
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You are making an assignment in the if statement and besides it is an array and not a scalar

. Let me see if I can get a proto version for you

Update:

use CGI qw(:standard Vars);
use CGI::Carp qw(warningsToBrowser fatalsToBrowser);

use strict;

print header;
print start_html("Test");

my %form = Vars();

map { print ("$_ = $form{$_}<br>\n"); } keys(%form);
print end_html();
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I am using Vars() to get all the form elements and then looping through it to print it on the screen. What you want from the above code is the  %form hash and you can check for conditions there. I had to modify the variables you were using because i am not sure quite sure where you get @array_and_filter etc. Anyways hopefully this points you in the right direction.

cheers

SK