how to use subscript and superscript?

[lpfy]

Just wondering how to use subscript and superscript? seems have to use native-extensions? not sure why the following not working.

<tiptap-vuetify v-model="content" :extensions="extensions" :native-extensions="nativeExtensions" />

import Superscript from "@tiptap/extension-superscript";
import Subscript from "@tiptap/extension-subscript";
import { TiptapVuetify, Bold, Italic, } from "tiptap-vuetify";

export default {
components: { TiptapVuetify },
data: () => ({
extensions: [
Bold,
Italic
],
nativeExtensions: [new Subscript(), new Superscript()],
}),
};