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Scenarios are an important mechanism for requirements specification and can be used to generate test paths at the requirements level. UML 2.0 provides a rich set of models for specifying scenarios, however, little work has focused on using UML 2.0 models for system testing. We propose a novel testing approach that uses UML 2.0 models for automated generation of test paths. This is done by enhancing the information with contracts and then formalizing it into a transition system. Test paths are then generated by path traversal of the transition system. The proposed approach is fully automatable and supported by a prototype tool, thus providing a platform for reducing the gap between high level scenarios and system testing.