Webservice from Portal Service - Import Param of WebService Method Error

Hello,
I have developed a portal service and after that I created a portal web service from that portal service... If I use a String variable for the import parameter of my webservice method everything works fine! But if I us a custom class for the im port parameter of the method I get an soap error when I call the webservice!
Error:
Service: MyService
URL: Endpoint
http://myportal/irj/servlet/prt/soap/com.sap.portal.prt.soap.MyServicec?style=rpc_enc
Method: add1to1
Exception: System.Web.Services.Protocols.SoapException
Message: com.company.ImportClass
The WSDL was generated Correctly:
     <schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://namespace.com" elementFormDefault="qualified">
          <complexType name="ImportClass">
               <sequence>
                    <element name="Import1" nillable="true" type="xsd:string"/>
                    <element name="Import2" nillable="true" type="xsd:string"/>
               </sequence>
          </complexType>
     </schema>
Thanks for your help!
Johannes
Edited by: Johannes Freitag on Jun 24, 2009 2:54 PM

Hi Ozzie,
in newer NWDS versions this wizard doesn't exist any more.
[http://help.sap.com/saphelp_nw70/helpdata/en/1f/4554426dd13555e10000000a1550b0/frameset.htm|http://help.sap.com/saphelp_nw70/helpdata/en/1f/4554426dd13555e10000000a1550b0/frameset.htm] describes how to create a web service from a portal service.
I personally didn't create a web service by this description however. I just created a normal Java class and created a Web Service out of this class (using EAR deployment).

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