Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Collisions
HAIR_SDYNAMICS_TAG_COLLISIONSParameter: Rigid
HAIR_SDYNAMICS_TAG_EXTRA_STIFFParameter: Set Initial
HAIR_SDYNAMICS_TAG_SET_STATEParameter: Drag
HAIR_SDYNAMICS_TAG_DRAGParameter: Radius
HAIR_SDYNAMICS_TAG_RADIUSParameter: Stiffness
HAIR_SDYNAMICS_TAG_STIFFNESSParameter: Rubber
HAIR_SDYNAMICS_TAG_RUBBERParameter: Rest Mix
HAIR_SDYNAMICS_REST_MIXParameter: Rest Hold
HAIR_SDYNAMICS_REST_HOLDParameter: Elastic Limit
HAIR_SDYNAMICS_ELASTIC_LIMITParameter: Deform
HAIR_SDYNAMICS_ELASTIC_DEFORMParameter: Display Anchors
HAIR_SDYNAMICS_TAG_DRAW_FIXEDParameter: Mass
HAIR_SDYNAMICS_TAG_MASSParameter: Set
HAIR_SDYNAMICS_TAG_SETMASSParameter: Set
HAIR_SDYNAMICS_TAG_SET_FIXEDParameter: Release
HAIR_SDYNAMICS_TAG_RELEASE_FIXEDParameter: Clear
HAIR_SDYNAMICS_TAG_CLEAR_FIXEDParameter: Gravity
HAIR_SDYNAMICS_TAG_GRAVITYParameter: Mode
HAIR_SDYNAMICS_TAG_FORCES_INCEXCParameter: Forces
HAIR_SDYNAMICS_TAG_FORCES_INCLUDEParameter: Dynamics Cache
HAIR_SDYNAMICS_CACHE_ENABLEParameter: Calculate
HAIR_SDYNAMICS_CACHE_CALCULATEParameter: Compress
HAIR_SDYNAMICS_CACHE_COMPRESSEDParameter: Empty Cache
HAIR_SDYNAMICS_CACHE_DELETEParameter: Update Frame
HAIR_SDYNAMICS_CACHE_CACHE_FRAMEParameter: Load...
HAIR_SDYNAMICS_CACHE_CACHE_LOADParameter: Save...
HAIR_SDYNAMICS_CACHE_CACHE_SAVEParameter: Cache
HAIR_SDYNAMICS_CACHE_CACHE_LIMITParameter: Steps
HAIR_SDYNAMICS_TAG_SUBDIVParameter: Iterations
HAIR_SDYNAMICS_TAG_ITERATIONSParameter: Auto
HAIR_SDYNAMICS_TAG_AUTOTIMEParameter: Start
HAIR_SDYNAMICS_TAG_STARTParameter: End
HAIR_SDYNAMICS_TAG_STOP