You need to refresh datastore, or change them in the datastore table, too.
Thank you. At least now I feel safe because I got very serious the possibility to have worked in different database. Just before I did a check and I found that the changes were done in the right database.
Datastore table? hmmm....... Most probably it will has a lot of fields or records to check. Finally the modification of login.php was the easiest way.