Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Initialize
ID_CA_MESH_DEFORMER_OBJECT_INITIAL
Parameter: Restore
ID_CA_MESH_DEFORMER_OBJECT_RESTORE
Parameter: Auto Init
ID_CA_MESH_DEFORMER_OBJECT_AUTO
Parameter: Strength
ID_CA_MESH_DEFORMER_OBJECT_STRENGTH
Parameter: Cages
ID_CA_MESH_DEFORMER_OBJECT_CAGE_INCLUDE
Parameter: Accuracy
ID_CA_MESH_DEFORMER_OBJECT_ACCURACY
Parameter: External
ID_CA_MESH_DEFORMER_OBJECT_EXTERNAL
Parameter: Auto Fit
ID_CA_MESH_DEFORMER_OBJECT_FIT