$params['is_display_amounts'] = CRM_Utils_Array::value('is_display_amounts', $params, FALSE);
$params['is_required'] = CRM_Utils_Array::value('is_required', $params, FALSE);
$params['is_display_amounts'] = CRM_Utils_Array::value('is_display_amounts', $params, FALSE);
$params['is_required'] = CRM_Utils_Array::value('is_required', $params, FALSE);