How to parse JSON using DOJO AJAX and REST
===

I am trying to send a request to a REST server using DOJO AJAX, however I get a null object as result (console):

You CLICKED = click clientX=34, clientY=13
JSON loaded from server: null

Here is my code:

    // JavaScript Document

    // load requirements for declarative widgets in page content
    require([	"dojo/parser",
			"dojo/dom",
			"dojo/domReady!",
			"dijit/form/Button"
			]);


    // Start initializing
    dojo.ready(function(){
	
	dojo.connect (
					aBut1,
					"onClick",
					function(e){
                                               
                    	console.log('You CLICKED = ', e);
                    	dojo.xhrGet({
						            // The URL of the request
						            url: "http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/find",
						            // Handle the result as JSON data
						            handleAs: "json",
						            // content
						            content: {f:"json", searchText:"new", contains:"true", searchFields:"state_new", layers:"2", returnGeometry:"false" },
						            // The success handler
						            load: function(jsonData) {
						                // Create a local var to append content to
						                console.info("JSON loaded from server:  ", jsonData);
						                
						            },
						            // The error handler
						            error: function() {
						                console.log('JSON log Error');
						            }
						        });
                    	
                  	});


    }); // End dojo.ready

This is the REST url I would like to use:

http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/find?searchText=new&contains=true&searchFields=state_name&sr=&layers=2&returnGeometry=false&f=json

I save the result of this URL in a json file and AJAX works reading that file and returning an object with 4 items. It is not using REST URL.

Thank you 