clr.AddReference("Rhino") -- > Could not add reference to assembly Rhino

Does anyone know why I’m getting

“Could not add reference to assembly Rhino” with the following code:

import clr

clr.AddReference(“Eto”)
clr.AddReference(“Rhino”)

on Rhino for Mac?

Sorry!

clr.AddReference(“Rhino.UI”) works,

my bad. Please ignore.