Extra selection with dielectron for D* -> D0ee

Idea is to add two electrons to D0 -> Kpi to search for D* -> D0ee and use D*->D0gamma as control channel. I pretty much copied the examples in https://gitlab.cern.ch/lhcb/Hlt/blob/bff928be59b1fe436740814b665eb37b30abedac/Hlt/Hlt2Lines/python/Hlt2Lines/RecoTest/Lines.py#L51 and don't have much knowledge of these things, so please have a look and tell me if it makes sense...