Pass MD5 value to prepopulate field

Finally found the solution (I’ve been working on this for 2 days)

add_filter("gform_field_value_editlink", "get_editlink");
function get_editlink(){
$current_user = wp_get_current_user();
$user_login = $current_user->user_login;
$user_email = $current_user->user_email;
    $editlink = md5($user_login . $user_email);
       return $editlink;
}