Missing encodingStyle

Hi,

i'm currently trying to access a webservice which is deployed on
a SunONE ApplicationServer 7 (which is nearly the same as the
Sun Wireless Developer Kit).
When i try to access the service, i get an "object not found"-error
or something similar.
When i try to access it "by hand" - this means i use XMLSpy to access
the service - and use the XML which is created by ksoap, 
he complains about a missing encoding style.
When i compare the XML there is really one attribute more in the code:
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
(SOAP-ENV is bound to "http://schemas.xmlsoap.org/soap/envelope/").
As i took a look in the source of the SoapSerializationEnvelope, i
found a piece of code which is commented out:
writer.attribute (Soap.ENV, "encodingStyle", encodingStyle); 
It is in the write(XmlSerializer) method.
I wonder if this the point where this attribute should be written 
and if there is a possibility add this attribute by hand
(i still use envelope.encodingStyle =
"http://schemas.xmlsoap.org/soap/encoding/";)

Thanks for help,
Torsten Straßer