util.JSONObject.toString
Builds a JSON string from the values contained in the JSON object.
Syntax
util.JSONObject.toString()
  RETURNS STRINGUsage
The toString() method
produces a JSON formatted string from the name-value pairs     contained
in the JSON object.
Example
IMPORT util
MAIN
    DEFINE obj util.JSONObject
    LET obj = util.JSONObject.create()
    CALL obj.put("num", "75263")
    CALL obj.put("name", "Ferguson")
    CALL obj.put("address", "12 Marylon Street")
    DISPLAY obj.toString()
END MAINOutput:
{"num":"75263","name":"Ferguson","address":"12 Marylon Street"}