Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Output
TUAIEXPORT_OUTPUTSIZEParameter: Width
TUAIEXPORT_OUTPUTSIZE_WIDTHParameter: Height
TUAIEXPORT_OUTPUTSIZE_HEIGHTParameter: Z Order
TUAIEXPORT_ZSORTParameter: Scale
TUAIEXPORT_SCALEParameter: Layers
TUAIEXPORT_LAYERSParameter: Export
TUAIEXPORT_EXPORTLINESParameter: Opacity
TUAIEXPORT_LINEOPACITYParameter: Thickness
TUAIEXPORT_LINETHICKNESSParameter: Patterns
TUAIEXPORT_LINEPATTERNSParameter: Connections
TUAIEXPORT_LINECONNECTIONSParameter: Export
TUAIEXPORT_EXPORTSURFACEParameter: Subdivide Polygons
TUAIEXPORT_POLYSUBDIVParameter: Divisions
TUAIEXPORT_POLYSUBDIV_LEVELParameter: Backface Cull
TUAIEXPORT_BACKFACECULLParameter: Overfill
TUAIEXPORT_OVERFILLParameter: Shading
TUAIEXPORT_SHADINGParameter: Export
TUAIEXPORT_ANIMATIONParameter: Output As
TUAIEXPORT_ANIMTYPEParameter: Frames
TUAIEXPORT_FRAMESParameter: Start
TUAIEXPORT_FRAME_STARTParameter: End
TUAIEXPORT_FRAME_ENDParameter: Frame Rate
TUAIEXPORT_FRAME_RATE