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Modeling complex systems can not be done without considering a system from multiple views. Using multiple views improves model understandability. However the analysis of models that integrate multiple views is difficult. In many cases a model can be evaluated only after its implementation. In our work we describe a visual modeling framework that allows for the evaluation of multiview models. We give an overview of our framework using a small case study of a Simple Music Management System. For each view in our framework we specify a separate role of the system. The whole system is specified as a composition of smaller roles. Each role, as well as the whole model of a system, can be evaluated by means of the analysis of possible instance diagrams (examples) that can be generated automatically. Instance diagrams are generated based on the formalization of visual models using the Alloy modeling language.