XML : Java set XStream deserialization rules

I have some class with codeBased enum filed. And i have xml serealized object of this class. But when I try to deserialize this xml with XStream I receive:

com.thoughtworks.xstream.converters.ConversionException: No enum constant com.functest.util.TriState.0 : No enum constant com.functest.util.TriState.0

Class

  class Params{     String clientCode;     TriState triState;  }    

xmlParameters String

  <Params>      <clientCode>1516001</clientCode>      <triState>0</triState>  </Params>    

TriState

  enum TriState implements codeBased{      YES(1);      NO(0);      UNDEFINED(-1);        int code;        TriState fromCode(int code){           if(code == 1) return YES;           if(code == 0) return NO;           return UNDEFINED;      }  }    

And I try to deserialize xml like this:

  XStream xStream = new XStream();  xStream.alias("triState", TriState.class);  Params p = xStream.fromXML(xmlParameters) as Params;    

How can I set deserialization rules to get value from xml and invoke enums method fromCode(0) ?