Hi, I'm struggling to get custom ComputedErrorViewMessage adapters to work in z3c.form. I'm still debugging, but I came across this: In error.py: ErrorViewMessage = value.StaticValueCreator( discriminators = ('error', 'request', 'widget', 'field', 'form', 'content') ) ComputedErrorViewMessage = value.ComputedValueCreator( discriminators = ('error', 'request', 'widget', 'field', 'form', 'content') ) class ErrorViewSnippet(object): ... def update(self): value = zope.component.queryMultiAdapter( (self.context, self.request, self.widget, self.field, self.form, self), interfaces.IValue, name='message') if value is not None: self.message = value.get() else: self.message = self.createMessage() ... From what I can tell, self.context is the exception; self.request, self.widget, self.field and self.form are as you'd expect. But the last discriminator, 'content' does not match up with 'self' (i.e. the error view snippet). So, which is right? The discriminator on the value adapter factory, or the multi-adapter lookup? The documentation mentions 'content' as the discriminator, but doesn't define it any further. FWIW, my expection is that 'content' should be the form's context content object. Martin