Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Reset
ID_CA_CAMERASPACE_DEFORMER_OBJECT_RESET
Parameter: Camera
ID_CA_CAMERASPACE_DEFORMER_OBJECT_CAMERA
Parameter: Strength
ID_CA_CAMERASPACE_DEFORMER_OBJECT_STRENGTH
Parameter: Grid X
ID_CA_CAMERASPACE_DEFORMER_OBJECT_GRID_X
Parameter: Grid Y
ID_CA_CAMERASPACE_DEFORMER_OBJECT_GRID_Y
Parameter: Safe Frame
ID_CA_CAMERASPACE_DEFORMER_OBJECT_SAFEFRAME
Parameter: Draw Grid
ID_CA_CAMERASPACE_DEFORMER_OBJECT_DRAW