XA DataSource ServerName not working - Mailing list pgsql-jdbc

I am using jboss 5.1 with postgres XA Datasource.  i have the
ServerName in the postgres-xa-ds.xml file but when the driver is used,
it is using my local computer's ip to connect to the database instead
of the one in postgres-xa-ds.xml.  When I change ServerName to URL or
someething else, I get an exception from jboss saying setURL method
does not exist on postgres's XADatasource, so i believe the name is
being set but not used by postgres XA Datasource for some reason.

any idea what is going on here?

thanks,
Dean