Grasshopper MDL table

I am unable to add a material in the Grasshopper MDL table.
I duplicated an existing Blue Glass material and simply changed the color to Red…
Moved the MDL to the “omniverse://localhost/Projects/TestSquare/” location.
Added the following to the omniverseMDLtable.csv… “Red Glass,NONE,Red_GlassC,/Projects/TestSquare,”

Unfortunately is not loading…
What am I missing?

Here are the instructions for Rhino

You can use these same instructions for Grasshopper materials handling.

As there is an equivalent Documents\Omniverse\Grasshopper\omniverseMDLtable.csv file that can be edited in the same way.