web service returning xsd:base64Binary

[dale con]

hello all i'm calling a web service that returns a xsd:base64Binary


using this code

 
String uncompresses = "some string in here" 
 
Service service = new Service();
            
Call call = (Call) service.createCall();
            
call.setTargetEndpointAddress(endpoint);
            
call.setOperationName("compress"); 
 
call.invoke(new Object[] {uncompressed});
 
byte[] bytes = (byte[]) call.invoke(new Object[] {uncompressed});
 

but it's not working i get a null

if i do this instead call.invoke(new Object[] {uncompressed}); and inspect the result it is correct

What do i need to do to get the result back in the byte [] bytes object

thanks for any help