Cant get transmission with a ramp working in the StandardSurface Shader

[oglu]

Is there a way to get this working?
A ramp just refuses to work with the StandardSurface in Maya2020.

Scene File Attached.

[hermit.crab]

Directly rendering standardSurface shaders has some limitations. Best you use V-Ray Mtls - you can easily convert Maya shaders to V-Ray ones via the "Convert scene to V-Ray" (V-Ray>Tools) and works well.

[oglu]

Thats not an option.
In this case we switch to Arnold.