Your script works, I made sure by testing it with a sample file. Could it be that your version.txt has invisible control characters in it? You can find out by using Data::Dumper with $Data::Dumper::Useqq=1 to print $vdata

In reply to Re: Use of uninitialized value when using regex by jethro
in thread Use of uninitialized value when using regex by PerlScholar

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