//Below example is used when admin don't want to expose the emails on Entry List view.
//To run below JS we need one formyoula select list element and one hidden filed element.
//Use a Formyoula JavaScript element to run the below JS example.
//Listen to Select List changes
$('select').change(function() {
  //Get the options value form formyoula select list element.
  var options = window.formyoula.form_fields["abcd-abcd-abcd"].get("select_options").split("\n");
  //Set the emails as a Select list optional value. ex: For Options on Select list:  Customer Support, Sales Support.
  var emails = ["customer@gmail.com","sales@gmail.com"];
  //Get the index of changed option.
  var index = options.indexOf($( this ).val());
  //Set Select List option as value of hidden field.
  window.formyoula.form_fields['Hidden Field'].set( { value: emails[index] } );
});