Protected Files of HIPS module don't work

Hi, I’m have been attached from teslacrypt ccc extension and now I want use hips to prevent this; so my goal is, given an extension file, choose the application that can modify it and allow to all the other to open and read only. So, searching to the internet, I have found this

I have tried to set only notepad as application to open and edit the txt file “nuovo documento di testo” but this function don’t work and also with wordpad I can edit txt file “nuovo documento di testo”…why?

in the image you can find my setting… where is the error?

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Protected files only protects against unknown files run on your computer. It does NOT protect against the user from modifying the files.