Hi all, I'm using Magritte to model some objects of mine and basically if the user edits the object I want the description to be the same, just the "unique key" to become read only. If they add then of course all fields are modify-able. I have done this by overriding #description on instance side to do something like: MyObject>>description |result| result := self class description. ^ someField ifNil: [ result ] "new instance" ifNotNil: [ result collect: [e| e label = 'Name Im interested in' ifTrue: [ e beReadonly; yourself ] ifFalse: [ e ] ] ] Now of course what happens is, if I click edit first then the fields are always read only and vice versa if I click new first, due to caching. That is, it works perfectly.... the first use, and from then on #description is called. Before I fought with this anymore I thought I would check if there is a simpler way to do what I'm trying to do. Thanks in advance, Jason