BRepFilletAPI_MakeFillet and Law_Function

Has anybody ever successfully created a fillet using a Law_Function with BRepFilletAPI_MakeFillet. If so an example would be greatly appreciated. I have tried numerous experiments with all relative functions and got nothing but errors or exceptions.

BRepFilletAPI_MakeFillet::Add (const Handle< Law_Function > &L, const TopoDS_Edge &E)

BRepFilletAPI_MakeFillet::SetRadius (const Handle< Law_Function > &L, const Standard_Integer IC, const Standard_Integer IinC)

BRepFilletAPI_MakeFillet::SetLaw (const Standard_Integer IC, const TopoDS_Edge &E, const Handle< Law_Function > &L)