We don't know HOW it doesn't work. Do you get an error message? Where do you fail? Can Perl not find Chart::Plot? Or maybe the pictures aren't being saved? Or maybe they don't look right? Maybe your machine catches fire? We can't tell.

Take a look at How to get the most of your question from the monks for more along these lines.

xoxo,
Andy
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I was dreaming when I wrote this, so sue me if I go too fast.