Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Scale
PAVEMENT_SCALE
Parameter: Seed
PAVEMENT_SEED
Parameter: Width
PAVEMENT_GAP_SIZE
Parameter: Soft
PAVEMENT_GAP_BLUR
Parameter: Crookedness
PAVEMENT_GAP_CROOKED_INTENSITY
Parameter: Crookedness Scale
PAVEMENT_GAP_CROOKED_SCALE
Parameter: Stone Color
PAVEMENT_COL_STONE
Parameter: Rough Structure
PAVEMENT_COL_STONE_STRUCT1
Parameter: Fine Structure
PAVEMENT_COL_STONE_STRUCT2
Parameter: Gap Color
PAVEMENT_COL_GAP
Parameter: Grainy Gaps
PAVEMENT_COL_GRAINYGAPS
Parameter: Contrast Grain
PAVEMENT_COL_GRAINYGAPS_MODE
Parameter: Smudgy Color
PAVEMENT_COL_SMUDGE
Parameter: Smudgy Edges
PAVEMENT_COL_SMUDGYEDGES
Parameter: Smudgy Edges Size
PAVEMENT_COL_SMUDGYEDGES_SIZE