[Zope] LDAP : add/modify/delete

Hi, I'd like to add, modify and delete entry in an LDAP directory. I've quickly read ZLDAPConnection's source and I guess that fonctions "_addEntry", "_deleteEntry" and "_modifyEntry" can do what I'm looking for, but I can't imagine how ! :) I've tried a LDAPlink.addEntry('dn','values') in a dtml-call. Apparently it work, but there nothing new in the directory :( Have you any ideas ? Thanks, EB.