SOAP and Complex Types

Hi ,
i'm trying to construct a .js to contact a WebService with complex types .
I know i can load schema and attach them to a SOAPParameter but i don't 
understand how to use them to complete the values of the SOAPParameter.
If i'm using the WSDL API, the schema attachment is automatic (in the 
Proxy build) ?
Somebody can help me ?

Ps : how can make dynamically reference to a WSDL ?

Jerome CERF