Not seeing Local Variable displayed in Typography Section

Hello!

I need help locating the variable button. I’m following a tutorial where they attach a number variable to a text box. In my Typography section, I can see options to attach variables to line height and letter spacing. However, I don’t see an option to assign a variable to the entire text box content, which is what I’m trying to do.

The dark theme screen shot is mine and the light theme screen shot is from the fallow along video.