Entity reference Hierarchical Select between three content types? I have three content types:


Courses
Sections
Chapters


Sections content type have Entity reference of Courses.

Chapters content type have two entity reference fields as Courses and Sections.

If I select the courses corresponding section I have to list out Chapters content type. I need a hierarchical structure.

How can I do that?
You could try that module conditional_fields 

That link also may help Update multiple fields with ajax callback in form