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This paper presents an approach for transforming UML Statecharts to General Stochastics Petri Nets. Unified Modelling Language (UML) is considered to be the standarditized language for modelling and describing systems behaviours for analysis. In other hand, Petri Net models are tools for the performance analysis of distributed systems. Graph grammars aims to bridge the gap between semi formal models generated by UML and formal notation as LGSPN models by means of transformations. Since the models wihch are concerned by this transformation are both graphs, we use Java based graph transformation and Eclipse tool to perform this process automatically.