How to filter regarding entity in dynamic CRM using JavaScript
 //filter regarding function regardingFilter (executionContext)  { var formContext = executionContext.getFormContext(); var regarding = formContext.getControl("regardingobjectid") ? formContext.getControl("regardingobjectid") : null; 	 if (regarding.getEntityTypes().length >= 1)             {                regarding.setEntityTypes(['opportunity']);       	     }                        } Screenshot:  After filter: Before filter :