Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Strength
ETPARAMETERTAG_STRENGTH
Parameter: Reset
ETPARAMETERTAG_RESET
Parameter: Mode
ETPARAMETERTAG_MODE
Parameter: Hide Unchanged
ETPARAMETERTAG_HIDEUNUSED
Parameter: Sample Point Mode
ETPARAMETERTAG_FIELDPOINT
Parameter: Fix Position
ETPARAMETERTAG_FIXPOSITION
Parameter: Fields
ETPARAMETERTAG_FIELDS