Can't generate PDF from xdp and XML

Hello,

I'm new to livecycle and flashbuilder.

I assigned as a task to send to a  livecycle server a xdp template and a XML file with the data in order to create the pdf.

So far, I created a class with two methods that returns as a BLOB the strings of a xdp template and the XML data to populate the template.

On the main application I'm calling the generatePDFOutput method from the OutputService and as far as I know I'm supposed to get a Blob which I can manipulate to save it as a PDF.

What could be my error? or how should I approach this problem? I came here since I can't find some document that shows how to create pdf from a flex app using livecycle...

I appreaciate your help.

I attach below the code of the main class

<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

               xmlns:s="library://ns.adobe.com/flex/spark"

               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="initializeChannelSet();">

    <fx:Script>

        <![CDATA[

            import flash.sampler.Sample;

            import mx.messaging.ChannelSet;

            import mx.messaging.channels.AMFChannel;

            import mx.rpc.CallResponder;

            import mx.rpc.events.ResultEvent;

            import services.outputservice.OutputService;

            import valueObjects.BLOB;

            import valueObjects.OutputResult;

            import valueObjects.PDFOutputOptionsSpec;

            import valueObjects.RenderOptionsSpec;

            private var parentResourcePath:String="/";

            private var serverPort:String="192.168.3.46:8080";

            private function initializeChannelSet():void{

                var cs:ChannelSet= new ChannelSet();

                cs.addChannel(new AMFChannel("remoting-amf", "http://"+serverPort+"/remoting/messagebroker/amf"));

                outputService.setCredentials("administrator","password");

                outputService.channelSet=cs;

            }

            protected function btn_clickHandler(event:MouseEvent):void

            {

            var pdf:OutputService= new OutputService();

            var x:TestPDF= new TestPDF();

            var wsCall:CallResponder= new CallResponder();

            var out:PDFOutputOptionsSpec= new PDFOutputOptionsSpec();

            out.fileURI="D:\PDF_Output\test.pdf";

            var render:RenderOptionsSpec= new RenderOptionsSpec();

            wsCall.token=pdf.generatePDFOutput("PDF","Form.xdp","D:\\PDF_Output", out,render,TestPDF.Data());

            var res:BLOB= wsCall.lastResult as BLOB;

            var result:ByteArray= new ByteArray();

                result=res as ByteArray;

            var a:Number=2;

        }

            protected function outputService_resultHandler(event:ResultEvent):void

            {

                // TODO Auto-generated method stub

            }

        ]]>

    </fx:Script>

    <fx:Declarations>

        <!-- Place non-visual elements (e.g., services, value objects) here -->

        <mx:RemoteObject id="outputService" destination="OutputService" result="outputService_resultHandler(event);"/>

    </fx:Declarations>

    <s:Button id="btn" x="90" y="141" label="Button" click="btn_clickHandler(event)"/>

</s:Application>