In the Z Class tutorial (page8) I read: "Property Sheets also allow more indirect access to properties via the propertysheets attribute. ... we could access the 'title' property via propertysheets.stuff.title attribute in addition to simply the title attribute. The sort of access is handy in the case where two different propety sheets define properties with the same name." Sounds great, so I tried to use to it to create a sort of "international" class: myClass: propertysheets english name description ..... but if i try: myClass: propertysheets french name ..... i get the following werror message: Invalid property id, first_name. It is in use. So it seems that contrary to what suggests the Z Class tutorial it is not possible to have two properties with the same name in the same ZClass even if they are in different propertysheets at least when using the management tabs to add a new property. Is it a mistake in the tutorial or is there another means to add a property with a same name in another propertysheet without getting an error?