Hi, I'm trying to define properties of custom objects in Interface Builder. I can see it in the manual for IB 3.2, but not in the IB 3.1 which I use in 10.5. Is it a new feature or I'm just looking in the wrong place? I don't see "User Defined Runtime Attributes" on the identity tab at all. What I want to achieve is add several custom formatter objects with attributes which I want to define in the IB. Or it sounds like a completely incorrect approach to the problem and data should be validated by view controller only?