Creating an account?????

[jeffm@]

I am having a problem trying to create an account for site builder through php. I am using the same code as the example scripts given but am getting an error about the plan id.

Am I missing something obvious?

The error:
Fatal error: Uncaught SoapFault exception: [soap:Server] Server was unable to process request. ---> Incorrect plan Parameter name: planId in F:\devel.www\hosting\includes\classes\sitebuilder\sitebuilder_client.php:26 Stack trace: #0 [internal function]: SoapClient->__call('CreateAccount', Array) #1 F:\devel.www\hosting\includes\classes\sitebuilder\sitebuilder_client.php(26): Utils_SoapClient->CreateAccount(Object(SoapVar)) #2 {main} thrown in F:\devel.www\hosting\includes\classes\sitebuilder\sitebuilder_client.php on line 26

my code:
$serviceUrl = 'http://blahblah.com.au:2006/ServiceFacade/4.1/';
$serviceLogin = 'login';
$servicePassword = 'password';
$accountService = new Utils_SoapClient ( $serviceUrl . '/AccountWebService.asmx?WSDL', array () );
$accountService->setCredentialsHeader ( $serviceLogin, $servicePassword );

$struct = new stdClass ( );
$struct->username = 'user';
$struct->password = 'pwd';
$struct->firstName = 'john';
$struct->lastName = 'ofl';
$struct->email = '[email protected]';
$struct->role = 'SiteOwner';
$struct->planId = '30b07cc2-1bb3-4cec-922f-ba1b5ebe5981';
$struct->changePasswordAllowed = 'true';

$svar = new SoapVar ( $struct, SOAP_ENC_OBJECT );
$result = $accountService->CreateAccount ( $svar );

the svar:
SoapVar Object
(
[enc_type] => 301
[enc_value] => stdClass Object
(
[username] => user
[password] => pwd
[firstName] => john
[lastName] => ofl
=> [email protected]
[role] => SiteOwner
[planId] => 30b07cc2-1bb3-4cec-922f-ba1b5ebe5981
[changePasswordAllowed] => true
)

)