[owl-s] ServiceParameter

[dink]

Hi, I'm a beginner using the owl-s api. Now I want to parse the owl-s file and have some problems.
The owl-s file uri : http://mis.ccu.edu.tw/~dink/ZipCodeFinder.owl
I use the ZipCodeFinder provided by mindswap and add a service parameter into it:
<profile:serviceParameter>
     <addParam:GeographicRadius rdf:ID="GeographicRadius">
       <profile:serviceParameterName>Geographic Radius</profile:serviceParameterName> 
       <profile:sParameter rdf:resource="http://www.daml.org/services/owl-s/1.0/Country.owl#UnitedStates" /> 
 </addParam:GeographicRadius>
</profile:serviceParameter>
I have tried to use the owl-s api to read the service parameter, but there is nothing about the parameter returned.
My simple code is as follows:

import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.URI;
import java.util.*;
import org.mindswap.owl.OWLResource;
import org.mindswap.owl.Util;
import org.mindswap.owls.OWLSFactory;
import org.mindswap.owls.io.OWLSReader;
import org.mindswap.owls.process.Input;
import org.mindswap.owls.service.Service;
import org.mindswap.owls.process.Process;
import org.mindswap.owls.profile.ServiceParameter;
import org.mindswap.owls.profile.Profile;

public class test
{
  public static void main(String[] args)
  {  
    try
    {
      URI uri = new URI("http://mis.ccu.edu.tw/~dink/ZipCodeFinder.owl");
      OWLSReader reader = OWLSFactory.createOWLSReader();
      Service service = reader.read(uri);
      Process process=service.getProcess();
      List a=service.getProfile().getServiceParameters();
      System.out.println(a); 
    }
     catch (Exception e) {System.err.println(e);}
  }
}

It always return java.lang.runtimeexception "not implemented yet". I have no idea to parse the ServiceParameter. 
Can anyone help me to know how to use the owl-s api to parse the ServiceParameter? thx...
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