wso2 for PHP sig model problems

[bonar]

I am using WSO2 for PHP. The log says " wsf version - 2.1.0." Apparently there is a problem occurring that has something to do with the signature model.My code is something like this:\[code\]$access_client = new WSClient(array( "wsdl" => "http://<HOST HERE>/imagenow/services/1.0/access_service/imagenow_access.wsdl",));$access_proxy = $access_client->getProxy();$req = array( 'LOCALE' => "US_en", // locale of client