Hello everyone, Wise 1.1 is really great, i like the easy way to use it. But recently i encounter a problem. When i tried to invoke a simple web service with "out" parameter, "argument type mismatch" exceptions were thrown. I read the API carefully and took a close look at the source code (to be more precise, "src\core\src\test\java\org\jboss\wise\core\client\impl\reflection\WSMethodImplTest.java"), then found wise did support the "out" parameter, am i right? Here is a code snippet: val clientBuilder = WSDynamicClientFactory.getJAXWSClientBuilder(); val client = clientBuilder.tmpDir("clienttmp").verbose(true).keepSource(true) .wsdlURL("http://localhost:7777/info?wsdl").build(); val method = client.getWSMethod("InformationService", "InformationPort", "getInfo"); val requestMap = new HashMap[String, Object] requestMap.put("arg0", "test".asInstanceOf[Object]); requestMap.put("arg1", Integer.valueOf(3)); requestMap.put("arg2", Integer.valueOf(0)); val result = method.invoke(requestMap, null); System.out.println(result.getMapRequestAndResult(null, null)); client.close(); It's written in Scala. Since it's very simple , i don't think there is a need to explain it. The logfile and sample server-side web service code are in the attachment. Can anybody help me? Thanks in advance. Best Regards, Yanguang Chen