encoding

I was checking if I can have more than one langauge support in in one resource xml
I was surprised to see that whatever be the encoding specified in strutscx-config.xml,
it always returned formatted output.

For example I changed 
<ko>EUC-KR</ko>
to
<ko>FAKE</ko>

I got correct korean output.
why is the StrutsCX transformer not getting affected by the encoding ?
However it complains (NullPointerException) if I remove the contents from <ko>.
Even changing the encoding in "variables_ko.xml" also not affecting the output ?

Pls provide some details if I am misinterpreting the things.

thanks
-Nitin