Sending Json Form from Flash AS3

The error is, because you are passing incorrect string to URLVariables constructor. Do not use URLVariables. Instead pass data as string: request.data=JsonObj;

Below is the code I am using to consume REST Web service and pass json parameter to service it shows. Error #2032: Stream Error.Andy idea what is going wrong

var ldr:URLLoader = new URLLoader();ldr.dataFormat = URLLoaderDataFormat.TEXT;var strData:String = "{\"gparam\": [ {\"productid\": \"" + productId + "\"},{\"message\": \"" + mesage + "\"},{\"googleappid\": \"" + googleappid + "\"},{\"senderid\": \"" + senderid + "\"},{\"appname\": \"" + appName + "\"},{\"userid\": \"" + userId + "\"},{\"receiverid\": \"" + receiverId + "\"} ]}";var hdr:URLRequestHeader = new URLRequestHeader("Content-type", "application/json");var req:URLRequest = new URLRequest("http://localhost/AndroidGCM/GCMNotification.svc/SendGCM");req.requestHeaders.push(hdr);req.method = URLRequestMethod.POST;req.data = strData;trace("data: " + req.data);ldr.addEventListener(Event.COMPLETE,onComplete);ldr.addEventListener(IOErrorEvent.IO_ERROR , onError);ldr.addEventListener(SecurityErrorEvent.SECURITY_ERROR ,onSecurityErr);ldr.load(req);function onComplete(e:Event):void{    trace("LOAD COMPLETE: " + ldr.data);TextField(parMC.getChildByName("txtCheck")).appendText("\n LOAD COMPLETE: " + ldr.data);}function onSecurityErr(e:SecurityErrorEvent):void{    trace("error: " + e.text );}function onError(e:IOErrorEvent):void{    trace("error: " + e.toString());}