I am trying to implement an errorReader for my form.

Following this example:
http://dev.sencha.com/deploy/ext-4.0.../xml-form.html
and creating an override of the whole form, just to add the model attribute worked out fine.

Am I missing something or is this property missing in SA 2.2?

What is the best way to set the model by hand? I don't want to override the whole form.