Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Force Update
OPYTHON_MAKEDIRTYParameter: Optimize Cache
OPYTHON_OPTIMIZEParameter: Reset on Frame 0
OPYTHON_RESETParameter: Code
OPYTHON_CODEParameter: Expression Editor...
OPYTHON_OPENEDITOR