help tomcat webservice and examples

Hello,
I am new to both web services and j2me applications, so that's why i 
appologise if my questiin would seem dumb.
I have modified the AirportWeather example to acces a webservice i have 
created an deployed using jwsdp (tomcat).
However, although i am able to acces it threough a simple java application, 
and it works fine, i can't make it work with j2me. I have tried several ways 
of accesing it and i get either "Internal Server Error" or "Bad Request".

Here is the interface to the webservice

/*
 Interfata
 */


package helloservice;

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface HelloIF extends Remote {
    public int getTemp(String s) throws RemoteException;
    public int getVant(String s) throws RemoteException;
    public int getUmid(String s) throws RemoteException;
    public int getPres(String s) throws RemoteException;
    public int getVizib(String s) throws RemoteException;
    public String getCer(String s) throws RemoteException;

}


And here are the messages i send and get from the webservice:

<SOAP-ENV:Envelope xmlns:HelloIF="urn:Foo" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-
ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-
ENV="http://schemas.xmlsoap.org/soap/envelope/">


 <SOAP-ENV:Body SOAP-
ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">


  <HelloIF:getUmid id="o0" SOAP-ENC:root="1">


   <s xsi:type="xsd:string">HECA</s>


  </HelloIF:getUmid>


 </SOAP-ENV:Body>


</SOAP-ENV:Envelope>




Response: 

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


<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:enc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:ns0="urn:Foo" 
env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><env:Body><env:F
ault><faultcode>env:Client</faultcode><faultstring>JAXRPC.TIE.01: caught 
exception while handling request: deserialization error: unexpected XML 
reader state. expected: END but found: START: 
s</faultstring></env:Fault></env:Body></env:Envelope>



Please help...I am stuck and out of ideas...
Thx,
Alex



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