Now I'm checking the employeeid from a hash and the userid and setting $ok to 1 if the two values are equal. Then I check ok and when I do the script dies on that line with "Can't use an undefined value as a HASH reference at /usr/local/www/cgi-bin/kapc/md2/display_md_calendar.cgi line 1570."

Here is the code.

my $value1 = int(%{@{$no_call_requested_days->{$today_int}}[$i]}->{'em
+ployee_id'});
my $value2 = int($user_id);
my $ok == (length($value1) == length($value2)) ? (1) : (0);
if ($ok == 1)
{
    for ($j=0; $j<length($value1); $j++)
    {
        if (substr($value1, $j, 1) != substr($value2, $j, 1))
        {
            $ok = 0;
        }
    }
}

if ($ok == 1) # SCRIPT DIES HERE
{
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