i´m now working on developing a validation for my uml model using papyrus, workin with the EVL by i can connect the code to the model and the defined message of the EVL doesn´t show.
i need a detailed step on how this is exactly works ?
I've added a minimal example to the repo under . Of particular interest should be uml.evl which contains a constraint that fails for all UML classes and plugin.xml which associates uml.evl with the UML metamodel. To run this you should import the project in your workspace, run a nested Eclipse instance , create a Papyrus project and a class diagram in the nested instance, add a class to it and then right-click on the diagram and select Validation->Validate Model.