$mailingID = CRM_Utils_Request::retrieve('mid', 'Integer', $this, FALSE, NULL);
$continue = CRM_Utils_Request::retrieve('continue', 'String', $this, FALSE, NULL);
$mailingID = CRM_Utils_Request::retrieve('mid', 'Integer', $this, FALSE, NULL);
$continue = CRM_Utils_Request::retrieve('continue', 'String', $this, FALSE, NULL);