Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Strength
ID_TDELTAMUSH_WEIGHTParameter: Iterations
ID_TDELTAMUSH_SMOOTH_ITERATIONParameter: Smooth View
ID_TDELTAMUSH_PREV_SMOOTHParameter: Tangent Mode
ID_TDELTAMUSH_TANGENT_TYPEParameter: Smooth Type
ID_TDELTAMUSH_WEIGHT_TYPEParameter: Active
ID_TDELTAMUSH_WEIGHTMAP_ONOFFParameter: Strength Map
ID_TDELTAMUSH_WEIGHTMAPParameter: Pin Border Points
ID_TDELTAMUSH_PIN_CORNERParameter: Affect Morphs
ID_TDELTAMUSH_AFFECTMORPHParameter: Initialize
ID_TDELTAMUSH_OBJECT_INITIALParameter: Release
ID_TDELTAMUSH_OBJECT_RESTORE