I have four corner points at vertical plane and like to connect these points and create polygon (or rectangle). I tried different 3D transformers and seem cannot create the desired polygons. Your help will be greatly appreciated. Thanks.

From original source data, I already have created four corner points (in red) with correct XYZ values. I just need to connect these points and create polygons at vertical plane which will vertically intersect existing gray polygon at XY plane. Any suggestion ? Thanks.