Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Min U
MDATA_UVPEELER_MIN_U
Parameter: Max U
MDATA_UVPEELER_MAX_U
Parameter: Min V
MDATA_UVPEELER_MIN_V
Parameter: Max V
MDATA_UVPEELER_MAX_V
Parameter: U Uniformity
MDATA_UVPEELER_U_UNIFORMITY
Parameter: V Uniformity
MDATA_UVPEELER_V_UNIFORMITY
Parameter: Invert U
MDATA_UVPEELER_U_INVERT
Parameter: Fixed Ring Lengths
MDATA_UVPEELER_FIXED_RING_LENGTHS
Parameter: Invert V
MDATA_UVPEELER_V_INVERT
Parameter: Equidistant Uniformity
MDATA_UVPEELER_EQUIDISTANT_UNIFORMITY
Parameter: UV Island Storage
MDATA_UVPEELER_UV_ISLAND_STORAGE
Parameter: Restrict UV Islands to Tiles
MDATA_UVPEELER_RESTRICT_TO_TILES
Parameter: Realtime Update
MDATA_UVPEELER_INTERACTIVE
Parameter: Apply
MDATA_UVPEELER_APPLY
Parameter: Reset Values
MDATA_UVPEELER_RESET