This API is subject to change. Bug fixes and new features will be released based on developer feedback throughout the preview period.
Updates the media on a marketing activity's story drafts with the provided media URL, leaving its post drafts unchanged.
A story draft holds one media item per frame, up to 5 frames. Specify mediaIndex to replace a
single frame, or omit it to replace the whole story with the one new media item. A story that has
no frame at that index is left unchanged.
You can only call this method when authenticated as a Wix app or Wix user identity.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.