Hi Gov,
You're absolutely right and by reading the following link http://help.sap.com/saphelp_nw73ehp1/helpdata/en/69/8a1e9553dc4baba6026a3db510cadb/frameset.htm I understand that there are two ways to create the proxy (SPROXY or SE80).
Since I've created the proxy with SE80 'Generating a Consumer Proxy Using the Web Service Creation Wizard', how can I regenerate it if I added some fields to the output? (it's the same WSDL).
Regards,
Omri