# you should specify uri()
my $soap = SOAP::Lite
  -> uri('http://my.own.site/CLASS') # <<< CLASS goes here
  # ..... other parameters
;
my $obj = $soap->call(new => @parameters)->result;
print $soap->call(method => $obj)->result;
# $obj object will be updated here if necessary, 
# as if you call $obj->method() and method() updates $obj
# Update of modified object MAY not work if server on another side 
# is not SOAP::Lite