too long

I am getting an error like this:

#21915469 : At least one valid shipping service must be specified.

The code that I'm using:

$ShippingServiceOptions = new ShippingServiceOptionsType(); 
$ShippingServiceOptions-> setShippingService('DE_InsuredDispatch');  
$ShippingServiceOptions-> setShippingServiceCost('3.33'); 
$ShippingServiceOptions-> setShippingServiceAdditionalCost('2.5');
$ShippingServiceOptions-> setShippingServicePriority('1');

$shipping[]=$ShippingServiceOptions;

Bit rusty... you may need to call the below to get the valid options for the item....

http://developer.ebay.com/devzone/xml/docs/reference/ebay/GeteBayDetails.html