SoapFault exception [VersionMissmatch] xml modification

[maxime.stream]

Hi all,

I'am working on my own roundcube configuration. Iam encountering a problem with the soapClient object

My goal is to modify the xml send by roundcube (the first step will be only to change the name). When I try to do so I have a soap Faut exception thrown in my ssl_error log => [VersionMissmatch].

Im my exemple I just want to change the connect() function name whit foo_connect(). After I will modify the xml structure.  

I have modified the soapserver.wsdl and changed all the connect name by => foo_connect
in the xsd defined.
I also modified the rcmail.php and change the connect name with foo_connect.
And in the rcube_webservice.php too.
But the [VersionMissmatch] exception is still there.

So my questions are:
Is it possible to do it ? Is there any other files where the functions are defined?
Did I forgot something ? Any suggestion ?

Tell me if there is anything you don't understand about my problem I'll try to clarified it.

Thank you

Max