'C:/Perl64/bin/' is not recognized as an inteal or exteal command, operable program or batch file

I installed active perl on my win2k12 server, I want to run a perl script but it showing this message, 'C:/Perl64/bin/' is not recognized as an inteal or exteal command, operable program or batch file. I change environment variable path like C:Perlbin,C:Perlsitebin,C:Perl64bin. but what ever path i changed same path is not recognised as an inteal or exteal command.

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