The example worked for me (printed '31.11')

As understand it, the functionality of SOAP::WSDL has been rolled into SOAP::Lite.

I am, however, running an older version of SOAP::Lite -- 0.60 on the system I tested from, and I don't think I have any systems running greater than 0.67 (make test fails for me on 0.68 and 0.69, and I haven't had a chance to figure out just what's going on, but I don't need any of the new functionality, so I just used older versions)