BusinessEvent.getResponseData() method , but can't get the respone data.

My java code have reference BusinessEvent.getResponseData() method , but can't get the respone data. What should i do ?

Web service interface :HelloWorld

C#

[WebMethod]

public string Helloworld(string MyName)

{

return "Hi"+Myname;

}

Oracle EBS requst data and event get the result is below, Missing MayName xiejr

Soap Message:

'<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="http://tempuri.org/">\n

<soapenv:Body>\n<tem:HelloWorld>\n

<tem:MyName>xiejr</tem:MyName>\n

</tem:HelloWorld>\n</soapenv:Body>\n

</soapenv:Envelope>';

Result:

<HelloWorldResponse xmlns="http://tempuri.org/">

<HelloWorldResult>Hi:</HelloWorldResult>

</HelloWorldResponse>

SoapUI Result:

<HelloWorldResponse xmlns="http://tempuri.org/">