Hi at all

I've a question about connectors. I create my own source, sink and a volume models. The volume model contains two simple connectors. They have only two variables m_flow and T. I create my models so, that all of input flow variables should be positive and all output flow  variables negative (it's mean m_flow). If I simulate my testmodel I expect, that negative m_flow from sourceconnector should be positive in the input connector of my volume model. In the simulation with OM it's wrong, both variables are negative. If I test it with dymola it works well.

I find here https://www.openmodelica.org/index.php/ … pic?id=891 and https://www.openmodelica.org/index.php/ … pic?id=905 some about this problem, but that was not really helpful for my problem.
Have anyone  any idea?

thanks for help