Variable in stepper not working

Hello, i’ve tried everything and i’m super stuck and need to test my prototype in a few days.

I have a prototype with a stepper in it, and i want to automatically set onClick the states of each stepper-item to ‘todo’ doing’ ‘done’ states according to the page/click and i can’t seem to get each step onto the variables. There’s nowhere to click to attach the steps to my created variables. The layer section on the right is not revealing the new variable icon.

Link: https://www.figma.com/file/atEVgTX4bcmlQ2kgfbfNIK/Hacker-report-template?type=design&node-id=89%3A38854&mode=design&t=FGwPhRYuFJnLkY8b-1