title: Wordpress: insert a custom post type instance as an option for a custom taxonomy
body: <p>I'm trying to connect a custom post type to a taxonomy defined in an other custom post type.</p>
  
  <p>I'll show you an example. I have a custom post type COURSE, i use this post type to create a class for a university, so in this post type i'll have some custom field (teacher, lesson schedule ecc ecc) and a taxonomy called Teacher.</p>
  
  <p>Teacher is an other custom post type i use to represent teachers working in my university.</p>
  
  <p>Now i would like to create a link between the Teacher instance and the Course, so while i'm creating a new course i will have the list of ALL teachers in the university and i can chose one (or more) from this list. </p>
  
  <p>How can i do that, should i define this list of teachers while i'm registering the taxonomy <strong>Teacher</strong>? Can you give me some code snippet to create this kind of association?</p>
  
  <p>Thanks in advance.</p>