How to implement the VisualHelper.TraverseModel for loaded model

Hi obj,
I try to use Visualhelper Class to subdivide the model graph of my imported model (.stl).
I try to use the Subdivision project and modify the UpdateModel(), but I get the triangle subdivision but not efect in the loaded model(Visual)
private void Load(string model) {
CurrentModel = ModelImporter.Load(model);

Visual3DHelper.TraverseModel<Model3D>(CurrentModel, ????);

I like the way to smoothing meshes but in code behind, loaded from database. Or any help!!

Thanks