Hide fields for users with no developer role

<iframe width="560" height="315" src="https://www.youtube.com/embed/NjN50mX9tq8" frameborder="0" gesture="media" allowfullscreen></iframe>

This script hides a custom field for users who are not assigned to the developer role.

if(isUserInRole(currentUser(), "EX", "Developers") == false) {
    lfHide("customfield_10711");
}