smodelAttribute and node substitute action

Hi,

I have an smodelAttribute that can be added to ClassifierMembers. The editor of the smodelAttribute just hast a cell for "attributed node".

For instance, we may attribute PlaceholderMember. The problem is that as soon as the attribute is added, node substitute actions like ctor_MemberBasedOnIncomplete break (i.e., the code completion menu is not shown).

Any ideas? Thanks!

Ben