ACL question

[Birintxo <birintxo@wanadoo.es>]

Greetings all,

	I'm trying to allow anonymous users to add entries, but not to delete them, 
they only can delete their own entries. So a user can add as entries as he 
want, but cant delete the other users's entries.

I have tried it with that:

access to *
        by self write
        by anonymous -r continue
        by anonymous +w stop

and with that too:

access to *
        by self write
        by anonymous +w stop
        by anonymous -r continue

but don't work. Both examples let users to delete any entry.

Thanks.