public void onUpdate(PolylineLineUpdatedEvent event) {
message2.setText(message2.getText() + " : Line Updated");
}
});
poly.addPolylineCancelLineHandler(new PolylineCancelLineHandler() {
public void onCancel(PolylineCancelLineEvent event) {
message2.setText(message2.getText() + " : Line Canceled");
}
});