Could it be:

       $data[23] =~ s/-/\.\./; # convert - to .. perl syntax
       ^^^^^
       ...
       push(@range,eval $array[23]); # i expanded here
                        ^^^^^^
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Also, you are forgetting a /g modifier on your regex:

       $data[23] =~ s/-/\.\./g;
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Those two changes should fix your problem.