c4d_objects/description/odeltamushdeformer.hParameters are accessed with cinema::C4DAtom::GetParameter() and cinema::C4DAtom::SetParameter(). See Parameters.
Parameter: Strength
ID_DELTAMUSH_DEFORMER_WEIGHTParameter: Iterations
ID_DELTAMUSH_DEFORMER_SMOOTH_ITERATIONParameter: Smooth View
ID_DELTAMUSH_DEFORMER_SMOOTHVIEWParameter: Tangent Mode
ID_DELTAMUSH_DEFORMER_TANGENT_TYPEID_DELTAMUSH_DEFORMER_TANGENT_AID_DELTAMUSH_DEFORMER_TANGENT_BID_DELTAMUSH_DEFORMER_TANGENT_CID_DELTAMUSH_DEFORMER_TANGENT_UVParameter: Smooth Type
ID_DELTAMUSH_DEFORMER_SMOOTHTYPEID_DELTAMUSH_DEFORMER_SMOOTHTYPE_FIXID_DELTAMUSH_DEFORMER_SMOOTHTYPE_PROPORTIONALParameter: Pin Border Points
ID_DELTAMUSH_DEFORMER_PIN_CORNERParameter: Initialize
ID_DELTAMUSH_DEFORMER_INITIALParameter: Release
ID_DELTAMUSH_DEFORMER_RESTOREParameter: Mode
ID_DELTAMUSH_DEFORMER_INEXCLUDE_MODEID_DELTAMUSH_DEFORMER_INEXCLUDE_MODE_EXCLUDEID_DELTAMUSH_DEFORMER_INEXCLUDE_MODE_INCLUDEParameter: Tags
ID_DELTAMUSH_DEFORMER_INEXCLUDE_LIST