PEAR::SOAP to .NET empty strings

We progressed a little and ran into a new problem... Wondered if anyone has ever experienced an issue where the soapclient $params array was sending empty strings. https://www.bmfenterprises.com/buildurl.php is the soapclient to http://www.optimalblue.com/enginews/utility.asmx?WSDL according to the folks over at Optimal Blue, I am getting to the service, calling the correct function, sending the correct variable names, but the Username and Password fields are coming over as empty strings according to their logs... With great appreciation! Corey