The ModelicaML graphicalModeling Language and Modelica/UML profile is a language for the description of continuous-time and discrete-time/event-based system dynamics. Modelica ML uses Papyrus as modelling tool implementation platform which is used for editing models. These models may be expressed in UML withoptional textual statements in Modelica as action language code. For the new version ModelicaML 2.0, the need for support in the new Papyrus M1 version was essential. In this master thesis project, new plug-in functionality was developed that has enhanced the existing functionality of the ModelicaML modelling environment within the Papyrus Eclipse plug-in. This includes handling Modelica modifiers as well as new views and component tree views which provides complete list of components for a selected class.