Question: How do I save a package into Maple's repository?

Hi, I use Maple 2017 on Windows 10 Pro. When I try to save a package that was included with the book entitled
"Finite Elements Using Maple - A Symbolic Programming Approach" by A. Portela and A. Charafi, Springer Verlag, Berlin, Heidelberg, 2002, with the line: "savelib('Plotter'):", maple return the error "Error, cannot open archive, C:\Program Files\Maple 2017\lib, for writing.". Someone can help me? Tank you.

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