Outline with transparent

Corona Corona for 3ds Max Help Required
1

Hi, I need to render using an outline, but I want the object to be transparent. I want only the lines to be visible. How can I do this?

2

Here are two options:

  1. Plug a Corona Physical or a Corona Legacy material as the Base material and set its opacity to something like 0.001 (but not 0)
  2. Plug a Corona Physical or a Corona Legacy material as the Base material, make it fully refractive, set roughness to 0, and set IOR to 1