Check out: HOW TO: Use the previews and unpreviews directing command 💜 🌙
Quote from there:
Let’s say the MC’s eyes are Violet and you want them to turn Red for a scene:
@CHARACTER previews eyesColor NAME
Using the example in action:
@YOU previews eyesColor Red
The eyes of the character YOU are now Red.
@YOU unpreviews eyesColor Red
The eyes of the character YOU are now back to what they originally had (in this example, Violet)
You can see which features exist by going to Characters, and looking at the choices (exact names are given). Make sure your character’s name is spelled right.