Animating to/from CSS Variables / Flickering on exit

[MarkusWendorf]

Hi, can someone figure out what the issue is with this exit animation?

<AnimatePresence>
  {show && (
    <motion.div
      initial={{ y: 'var(--from-y)' }}
      animate={{ y: 'var(--to-y)' }}
      exit={{ y: 'var(--from-y)' }}
      transition={{ duration: 5 }}
    >
      Jumping on exit
    </motion.div>
  )}
</AnimatePresence>

Code:
https://stackblitz.com/edit/vitejs-vite-m9owzr?file=package.json,src%2FApp.tsx&terminal=dev

[MarkusWendorf]

Had to include the unit in the properties. Changed 100 to 100px.