Jenni,
You could use the magic built into the ++ operator outlined in perldoc perlop. Since you have already explained what you are doing, I provide just the last step. 
$array[0]++;

[download]
If you don't want to use magic: 
my ($letter, $number) = $array[0] =~ /(\w)(\d+)/;

$number++;
$number = sprintf("%.6d", $number);

$array[0] = $letter . $number;

[download]

Those steps could be simplified, but I did them step by step so that you could see what was going on.

Cheers - L~R

In reply to Re: increment id num by Limbic~Region
in thread increment id num by Anonymous Monk

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