=?iso-8859-1?Q?J=F6rg_Kubaile?= writes: > I'm looking for a chance, to make some stuff on deleting an instance of a > ZClass. On adding, there is no problem, cause of the constructor methods. > but how will i make this on deleting? You can try to define "manage_beforeDelete" as a Python Script. Check, what parameters are passed. If you are lazy, use "*args" as parameter specification. Dieter