Contextual Alternates — Change last letter

[RasmusLM (Rasmus Lund Mathisen)]

I have a typeface that only consists of numbers, and one stylistic set of numbers. I want the last number in the “line” to change to .ss01. What contextual script should I use?

Thank you!
Rasmus

[GeorgSeifert]

Does this help: Features, part 4: positional alternates | Glyphs

[RasmusLM (Rasmus Lund Mathisen)]

I just found this thread, and that made it more clear to me: Noob needs to learn how to code contextual alternatives - #12 by GeorgSeifert

[RasmusLM (Rasmus Lund Mathisen)]