Hi, First I apologize for this very late response! I hope you have found the way to use this command or the validation plugin is not user friendly ;) The context for the add-constraint command is the Java class. When you add a constraint you have to specify where your constraint will be added (eg. add-constraint NotNull --onProperty foo). Maybe this could be a great feature to make this plugin contextual. I mean when you are on a class/field/method this constraint will be added automatically on the current resource. --Kevin Le dimanche 26 juin 2011 à 19:19, Ricardo Martinelli Oliveira a écrit :