PMPRO Register Helper Add on - Hide a field for admins only.

pmpro-admin-only.php

<?php

//paste lines 5-39 in your functions.php or custom PMPRO plugin

function my_pmprorh_init()
{
    //don't break if Register Helper is not loaded
    if(!function_exists("pmprorh_add_registration_field"))
    {
        return false;
    }
 
    //define the fields
    $fields = array();
  $fields = array();
    $fields[] = new PMProRH_Field(
        "admin_notes",
        "textarea",
        array(
            'label' => 'Admin Notes',
            'profile' => 'only_admin' //Makes the field only visible to administrators on the backend.
        ));
     $fields[] = new PMProRH_Field(
        "alternative_email",                     
        "text",                         
        array(
            'label'=>'Alternative email',   
            'profile'=>'admin'
                 
        )); 
    //add the fields into a new checkout_boxes are of the checkout page
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "checkout_boxes", // location on checkout page
            $field            // PMProRH_Field object
        );
    //that's it. see the PMPro Register Helper readme for more information and examples.
}
add_action("init", "my_pmprorh_init"); 

?>

Hey Andrew,
when I set 'profile' => 'only_admin' or even to 'only' it does not work. The profile field is still visible to all. Any idea?