send json object to xsjs
var JSONString = $.request.parameters.get("JSON_DATA");//Reading the input JSON string
var JSONObj = JSON.parse(JSONString);//serializing the input string
// Now we have the JSON object with us. Do what ever manipulation you want to do on it.
//For the test case i am just returning the number of rows in the JSON object
$.response.setBody(JSONObj.length);