WebService with a parameter

[Fady Kaddoum]

Hello,   I wrote a small SOAP client to call a .NET web service 'getServerTime' @ http://www.nanonull.com/TimeService/TimeService.asmx. It works great. On the other hand, when I call another service 'getCityTime' that needs a parameter, I get an error message saying: Server was unable to process request. --> Object reference not set to an instance of an object.   Can't figure out what is the problem??   Here is my code:    =========       Service service = new Service();       Call call = (Call) service.createCall();         call.setTargetEndpointAddress(new java.net.URL(endpoint));       call.setSOAPActionURI("http://www.Nanonull.com/TimeService/getCityTime");         call.setOperationName("getCityTime");         call.addParameter("city", org.apache.axis.Constants.XSD_STRING, javax.xml.rpc.ParameterMode.IN);       call.setReturnType(org.apache.axis.Constants.XSD_STRING);         String ret = (String) call.invoke(new Object[] {"LONDON"}); =========   Thanks! Fady