Fira Code for sublime?

Question

Sublime Text

settings looks like this:

"font_size": 12,
  "font_face": "Fira Code",
  "color_scheme": "Packages/Material Nil/schemes/LongishDark.tmTheme",
  "ignored_packages":
  [
    
  ],
  "theme": "Material-Theme.sublime-theme"

But the spec. characters are still not applied. The fonts themselves, of course, installed.