Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Mode
FP_SURFACEATTRACT_OBJECT_BEHAVIOUR
Parameter: Radius
FP_SURFACEATTRACT_OBJECT_RADIUS
Parameter: Strength
FP_SURFACEATTRACT_OBJECT_STRENGTH
Parameter: Damping
FP_SURFACEATTRACT_OBJECT_DAMPING
Parameter: Randomize
FP_SURFACEATTRACT_OBJECT_RANDOMIZE_TARGET
Parameter: Apply Object Velocity
FP_SURFACEATTRACT_OBJECT_APPLY_VELOCITY
Parameter: Target Group
FP_SURFACEATTRACT_OBJECT_TARGET_GROUP
Parameter: Mode
FP_SURFACEATTRACT_OBJECT_ELEMENTS_INEXMODE
Parameter: Simulation Tags
FP_SURFACEATTRACT_OBJECT_ELEMENTS
Parameter: Select Considered Geometry
FP_SURFACEATTRACT_OBJECT_SELECT_GEOMETRY