Commenting a PDF based on some text

"aqua" <[email protected]> Wed, 16 Jan 2008 04:41:07 +0000

Newsgroups	gmane.comp.lang.perl.modules.pdfapi2
Message-ID	<[email protected]>

Dear Group,

I have few "Comment enabled" PDF. I would like to search few text in that PDF and add comments using a PERL script. Is there any sample code to add comments to a PDF?.

Thanks and Regards
Dominic