no. you do not need a variable named gzip at all. You need to add the new path, that points to the binary, at the end of the PATHlike this?
Variable Name:
gzip
Variable Value:
%programfiles(x86)%\GnuWin32\bin‘’C:\Program Files\(x86)\GnuWin32\bin”
Like this for winzip, but do it for gzip.
https://kb.corel.com/en/125976