...
<soap:Body><tns1:mySub><foo xsi:type="xsd:string">HELLO</foo></tns1:mySub></soap:Body></soap:Envelope>
SOAP::Transport::HTTP::Client::send_receive: HTTP/1.1 200 OK 
...

##</code><code>##

#my $soap = SOAP::WSDL->new(
#    wsdl => 'http://localhost/wsdl/wsdl.xml',
# );

#my $result = $soap->call('MySub', "foobar");