AddStructuralFeatureValueAction
Screencast: Cameo Simulation Toolkit: v19SP3: Analysis: When a Property is typed by an abstract Block an instance of a concrete specialising Block will automatically be created and assigned even when the lower multiplicity is 0
Video style
This screencast video is an analysis of this suspected issue:
It also includes a nice demo of using an Activity and Actions to simulate instance creation and assignment in Magic Model Analyst® (Cameo Simul