Good suggestion from
@bumblebaetuna, but that's a little unnecessary. Instead of renaming the .VAR to a .ZIP, just use the "Open Archive" feature of 7-Zip (right-click on the VAR, 7-zip, open archive). From inside the 7-Zip dialog window of your opened archive you can inspect its contents, change or add files, edit .json files, etc, and it will resave it into the archive for you. No need for renaming, extraction, and re-zipping.