You have to show us what $pbxex looks like. If the hash already has something in it, your code seems to work fine for me: 
use warnings;
use strict;

my %hash = (CS => 4);
while (<DATA>) {
    chomp;
    $hash{$_}++;
    print "$_$hash{$_}\n";
}

__DATA__
CS
CS

[download]
prints: 
CS5
CS6

[download]

In reply to Re: Hash not working as intended by toolic
in thread Hash not working as intended by ddrew78

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