Axis client

Question

i'm trying to build a soap webservice client with axis. i know how to generate a simple soapmessage by     
call.addParameter("param1", XMLType.XSD_STRING, ParameterMode.IN);
call.addParameter("param2", XMLType.XSD_STRING, ParameterMode.IN);
Object params[] = new Object[2];        
params[0]=(Object)param1;
params[1]=(Object)param2;
call.invoke(params);     which generates:
<soapenv:Body>
  <ns1:meth1 soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
       xmlns:ns1="urn:method">
   <param1 xsi:type="xsd:String">xyz</param1>
   <param2 xsi:type="xsd:String">abc</param1>
  </ns1:meth1>
</soapenv:Body>but how can i generate soap messages with complex parameters like this:
<soapenv:Body>
  <M:meth1 soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
       xmlns:ns1="urn:method">
   <param1>
     <n1>a</n1>
     <n2>b</n2>
   </param1>
  </M:meth1>
</soapenv:Body>thx for any help!

Answer 1

New INFO:
I tested the webapp in Tomcat (6).
The webservice is being called successfully. Doese anyone know how to overcome the differences?
Regards,
Romano