title: Associate contact entity to multiple entities using Web API- Dynamics CRM
body: <p>I am needing to associate contacts entity to multiple studios(studios is a custom entity). I am using a lookup field in contacts entity, <code>contact.studioid</code> to do the same.</p>
  
  <p>I am able to associate initially then replace Studio associations using Web API using this 
  <code>contact["studioid_odata.bind"] = "/studios(GUID)"</code> line in my Web API JSON body which works well to replace the studio. </p>
  
  <p>I would like to know how to associate a new studio to the contact on each call, without replacing it.</p>