If you write json-style declarations, like:

  "name": "Skip Tracer",
  "location": "The city that never sleeps",
  "age": 5,
  "real": false,
  "cases": null,

false and null will fail because the parser does not turn on the magic SDF_JSON_KEYWORDS flag while parsing this input. If does turn this on for json-to-xml mode.

The production jsonst_name_and_colon needs to turn this flag on and the production jsonst_stmt needs to clear it.

Thanks,
Phil