Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Enabled
PYRO_TAG_EMITTER_ENABLEDParameter: Object Voxel Size
PYRO_TAG_OBJECT_VOXEL_SIZEParameter: Substep Mode
PYRO_TAG_SUBSTEP_MODEParameter: Substeps
PYRO_TAG_SUBSTEPSParameter: Surface Emitter
PYRO_TAG_SURFACE_EMISSION_ENABLEDParameter: Surface Thickness
PYRO_TAG_SURFACE_THICKNESSParameter: Enabled
PYRO_TAG_DENSITY_ENABLEDParameter: Density Map
PYRO_TAG_SURFACE_WEIGHTS_DENSITYParameter: Set
PYRO_TAG_DENSITY_MINParameter: Add Density
PYRO_TAG_DENSITY_ADDParameter: Color
PYRO_TAG_DENSITY_COLOR_ENABLEDParameter: Color
PYRO_TAG_DENSITY_COLORParameter: Enabled
PYRO_TAG_TEMPERATURE_ENABLEDParameter: Temperature Map
PYRO_TAG_SURFACE_WEIGHTS_TEMPERATUREParameter: Set
PYRO_TAG_TEMPERATURE_MINParameter: Add
PYRO_TAG_TEMPERATURE_ADDParameter: Enabled
PYRO_TAG_FUEL_ENABLEDParameter: Fuel Map
PYRO_TAG_SURFACE_WEIGHTS_FUELParameter: Fuel Type
PYRO_TAG_FUEL_TYPEParameter: Set
PYRO_TAG_FUEL_MINParameter: Add
PYRO_TAG_FUEL_ADDParameter: Match Burning Rate
PYRO_TAG_FUEL_MATCH_BURNING_RATEParameter: Constant Pressure
PYRO_TAG_FUEL_CONSTANT_PRESSUREParameter: Burning Rate
PYRO_TAG_FUEL_BURNING_RATEParameter: Initial Contingent
PYRO_TAG_FUEL_INITIAL_CONTINGENTParameter: Emission Frame Start
PYRO_TAG_FUEL_TARGET_FRAMEParameter: Emission Frame End
PYRO_TAG_FUEL_TARGET_FRAME_ENDParameter: Enabled
PYRO_TAG_VELOCITY_ENABLEDParameter: Type
PYRO_TAG_VELOCITY_TYPEParameter: Strength
PYRO_TAG_VELOCITY_STRENGTHParameter: Direction
PYRO_TAG_VELOCITY_DIRECTIONParameter: Noise Strength
PYRO_TAG_NOISE_STRENGTHParameter: Noise Scale
PYRO_TAG_NOISE_SCALEParameter: Noise Frequency
PYRO_TAG_NOISE_FREQUENCY