> > I think it's because somewhere in roassal > objects (in this case ast nodes) are compared by value.
Pretty much; there is test for equality
RTGroup>>elementFromModel: anObject
^ self detect: [ :el | el model = anObject ] ifNone: [ nil ]
and equality is more often than not wanted.
So solution might be to tell Mondrian that you want to compare by identity
and not equality?
Peter
