@naeem For a sensible answer, I need to know more information. Which JSON file is it and what is it for?
JSON file is easy to create, just click "Write to file", for example, with the name "my_file.json". You can find the content (syntax) of JSON here: https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/JSON
Premium BAS license holders have the ability to compile BAS with other parameters, including some earlier versions.
I have compiled versions since 22.6.9, but I'm too lazy to throw in the file share and drop the link.