Ksoap: ksoap2 object parameter

Thanks Michael for your example, but can your provide a simpler one?

Questions:

1. From my code example, how can it be fixed to work ?
2. Can a SoapObject contain another SoapObject as a property (request parameter)?

The codes:

            SoapObject person = new SoapObject("urn:type-person", "person");
            person.addProperty("age", new Integer(21));
            person.addProperty("married", new Boolean(true));
            person.addProperty("name", "freakin");
            person.addProperty("salary", new Long(5000));

            // create soap object
            SoapObject method = new SoapObject("urn:soap-call", "echoPerson");
            method.addProperty("person", person);

            // create envelope
            SoapSerializationEnvelope env = new SoapSerializationEnvelope(SoapEnvelope.VER10);
            env.bodyOut = method;

            // create http transport to send the envelope
            HttpTransport http = new HttpTransport     ("http://localhost:8080/axis/services/EchoWebservice");
            http.debug = true;

this is the response dump:

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<soapenv:Fault>
   <faultcode>soapenv:Server.userException</faultcode>
   <faultstring>org.xml.sax.SAXException: Deserializing parameter 'person': could not find deserializer for type {urn:type-person}person</faultstring>
   <detail/>
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>
soapenv:Server.userException

I hope there's a simpler way to achieve this

Thanks again in advance