Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Mode
ID_CA_ANIMATION_MODIFIER_TAG_MODEParameter: Offset
ID_CA_ANIMATION_MODIFIER_TAG_OFFSETParameter: Time Factor
ID_CA_ANIMATION_MODIFIER_TAG_TIME_STRETCHParameter: Strength
ID_CA_ANIMATION_MODIFIER_TAG_SPRING_STRENGTHParameter: Stiffness
ID_CA_ANIMATION_MODIFIER_TAG_SPRING_STIFFNESSParameter: Drag
ID_CA_ANIMATION_MODIFIER_TAG_SPRING_DRAGParameter: Iterations
ID_CA_ANIMATION_MODIFIER_TAG_SPRING_ITERATIONSParameter: Strength
ID_CA_ANIMATION_MODIFIER_TAG_POSTERIZE_STRENGTHParameter: Frame Step
ID_CA_ANIMATION_MODIFIER_TAG_POSTERIZE_TIMEParameter: Strength
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_STRENGTHParameter: Position
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_POSITIONParameter: Rotation
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_ROTATIONParameter: Scale
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_SCALEParameter: Attributes
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_ATTRIBUTESParameter: User Data
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_USERDATAParameter: Speed
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_SPEEDParameter: Seed
ID_CA_ANIMATION_MODIFIER_TAG_NOISE_SEEDParameter: Strength
ID_CA_ANIMATION_MODIFIER_TAG_SMOOTH_STRENGTHParameter: Range
ID_CA_ANIMATION_MODIFIER_TAG_SMOOTH_NEIGHBORParameter: Mask
ID_CA_ANIMATION_MODIFIER_TAG_SMOOTH_SPLINEParameter: Stregth
ID_CA_ANIMATION_MODIFIER_TAG_OUTLIER_REMOVAL_STRENGTHParameter: Threshold
ID_CA_ANIMATION_MODIFIER_TAG_OUTLIER_REMOVAL_SIGMAParameter: Hierarchy
ID_CA_ANIMATION_MODIFIER_TAG_HIERARCHYParameter: Tags
ID_CA_ANIMATION_MODIFIER_TAG_INCLUDE_TAGSParameter: Mode
ID_CA_ANIMATION_MODIFIER_TAG_EXCLUSION_MODEParameter: Tracks
ID_CA_ANIMATION_MODIFIER_TAG_EXCLUSION_MODE_TRACKParameter: Range
ID_CA_ANIMATION_MODIFIER_TAG_RANGEParameter: Start
ID_CA_ANIMATION_MODIFIER_TAG_RANGE_STARTParameter: End
ID_CA_ANIMATION_MODIFIER_TAG_RANGE_ENDParameter: Bake
ID_CA_ANIMATION_MODIFIER_TAG_CREATE_CACHEParameter: Clear
ID_CA_ANIMATION_MODIFIER_TAG_CLEAR_CACHE