Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Force Update
OPYTHON_MAKEDIRTY
Parameter: Optimize Cache
OPYTHON_OPTIMIZE
Parameter: Reset on Frame 0
OPYTHON_RESET
Parameter: Code
OPYTHON_CODE
Parameter: Expression Editor...
OPYTHON_OPENEDITOR