Set alternative value for a multimedia

This is how you can set alternative value to a single multimedia via API.
The MultimediaPath scalar type represents a textual combination of MultimediaFolderPath, and MultimediaName joined with '/' Multimedia identifier pointing to its exact location. If the file is in the root folder you need to skip MultimediaFolderPath in path.
mutation {
input: {
path: "multimedia.jpg"
alt: { language: "en_GB", value: "Alternative value" }
) {