PHP SOAP or NuSoap client / server

Trying to set up a simple client / server to send / consume the structure in soaprequest.txt. Have got the structure correct but can work out why the body element in: 'header' => $header, 'body' => 'aaarggg' is not picked up by the server. If the client sends: xsd:string, xsd:string, the server retrieves both elements / values. If the client sends: complextype, xsd:string, the server retrieves only the first element. So passing in header, body I only get the header; passing in body, header I only get the body NuSoap files [login to view URL]