We can offer more and better help if you provide us with a precise and detailed translation of "doesn't work."

The Monastery's crystal ball has been out of service for some time. It doesn't work.

Update and PS: I don't see a statement in the form which appears in your narrative, system ($CP, $srcfile, $dstfile); an instantiation of $CP, nor any reason to surround the CLI in Ln7 with backticks (`) since you've invoked system. Since you've created an ID/handle and account, you can edit your OP... but please include a note identifying what you've changed, added, deleted or otherwise amended.