Again,

Call acl.AddRole( "TEMPROLE" )
acl.InternetLevel = 4
Call acl.Save

this code just adds new role but doesn't update InternetLevel if it's
being run on server.
If you run this code localy from the agents list it works fine.

So maybe there is some InternetLevel restrictions on Domino server to
change/update this specific option?
Who knows?

Thanks
Vlad