Just added a Filter for that custom field
add_filter(‘acf/fields/user/query/name=customfieldname’, ‘acf_refernt_field_filter’, 10, 3);
function acf_refernt_field_filter( $args, $field, $post )
{
// modify get users args of that field
$args[‘role’] = ‘my-custom-user-role’;
return $args;
}
