I rewritten the code to support the new version. It’s done, but there is a bug that breaks the WYSIWYG editor and i have to fix it before publish. I hope i can do this as soon as possible, I need this plugin too. If some developer wants to help, the repository and bug is in the link.
@creativescript Modal only works for the first FC field, the second inside it, or nested FC fields, uses the normal arrow to open. This is to prevent open a Modal over another Modal.
You can create a simple form that causes the error in your project, export in json and paste here.