Since you first would test Don's implementation with the JSON expression, it would be useful if you set up and run Huda's RuleMaker v3 locally to get that earlier JSON output.

Alternatively you can use the current RuleMaker v4 https://prod-xalgorithms-v4.onrender.com/ where you can download the logic gate in various formats incl. JSON, and just that into an older testcase rule package with all the metadata etc.

I can step through this on a shared-screen video call when you want.