In the Projects window of the IDE, right-click the Hello node and choose New -> WSDL Document.
In the File Name field type HelloWSDL.
In the WSDL Type, select the Concrete WSDL Document option.
In the Binding field, select SOAP and in the Type field, select RPC Literal.
Click Next.
On the Abstract Configuration page, in Input, under the Message Part Name double-click Part1 and change the value to in and press Return.
Doing the same way in Output, change Part2 to out under Message Part Name and press Return.
Click Next.
Choose the defaults and click Finish on the Concrete Configuration page.