Auto-populate data from a custom post type

Thank you for designing this plugin!

I have no problem to include a custom field into the form for users to enter data. However, is there a way to include a custom field to a form and pre-populate data (with autocomplete feature) from that custom post type?

For example, there is a custom post type called “Authors” which contains a list of authors. I like to create a form with the author field that come with autocomplete feature. So, users can type in some characters and get a correct author’s name.

Thanks,

https://ww.wp.xz.cn/plugins/gravity-forms-custom-post-types/