SOAP::RPC::Driver

i want to get a service from this site :

http://ww2.tsetmc.com/webservice/TsePublic.asmx

def index
      soapdriver =
SOAP::WSDLDriverFactory.new(wsdlPath).create_rpc_driver
      result = soapdriver.Board(:UserName => 'usernameValue',:Password
=> 'passwordValue')
end

but this site return a empty object for this method
=> SOAP::Mapping::Object

Have you tested that the service works nicely with your request from a
mocking utility like Soapui?
Rails and SOAP aren't that well integrated, and the little I've done
with it in the past, I've found Soapui invaluable to make sure the
server is responding properly at least, even if my Ruby code was
playing up.

i tested this service with JAVA and it works , but my Ruby code cann't
get this service, i don't know , why?! :((