Обработка полей формы перед сохранением

<?
require($_SERVER["DOCUMENT_ROOT"]."/bitrix/header.php");
$APPLICATION->SetTitle("Доска объявлений");

    $_POST['PROPERTY']['22'][0] = "Russia";


$APPLICATION->IncludeComponent("bitrix:iblock.element.add", "template1", array(
    "NAV_ON_PAGE" => "10",
    "USE_CAPTCHA" => "N",
    "USER_MESSAGE_ADD" => "Ваше объявление добавлено",
    "USER_MESSAGE_EDIT" => "Ваше объявление сохранено",
    "DEFAULT_INPUT_SIZE" => "30",
    "IBLOCK_TYPE" => "services",
    "IBLOCK_ID" => "9",
    "PROPERTY_CODES" => array(
        0 => "NAME",
        1 => "21",
        2 => "22",
        6 => "42",
        7 => "44",
        9 => "38",
        11 => "41",
        12 => "42",
        13 => "43",
        14 => "44",
        15 => "45",
        16 => "46",
        17 => "47",
        18 => "48",
        19 => "49",
        20 => "50",
        21 => "51",
        22 => "52",
        23 => "53",
    ),
    "PROPERTY_CODES_REQUIRED" => array(
        0 => "NAME",
           1 => "41",
        2 => "42",
        3 => "43",
        4 => "44",

    ),
    "GROUPS" => array(
        0 => "2",
    ),
    "STATUS" => array(
    ),
    "STATUS_NEW" => "1",
    "ALLOW_EDIT" => "Y",
    "ALLOW_DELETE" => "Y",
    "ELEMENT_ASSOC" => "CREATED_BY",
    "MAX_USER_ENTRIES" => "20",
    "MAX_LEVELS" => "1",
    "LEVEL_LAST" => "Y",
    "MAX_FILE_SIZE" => "0",
    "SEF_MODE" => "N",
    "SEF_FOLDER" => "/content/board/my/",
    "AJAX_MODE" => "N",
    "AJAX_OPTION_SHADOW" => "Y",
    "AJAX_OPTION_JUMP" => "N",
    "AJAX_OPTION_STYLE" => "Y",
    "AJAX_OPTION_HISTORY" => "N",
    "CUSTOM_TITLE_NAME" => "Краткое описание объявления",
    "CUSTOM_TITLE_TAGS" => "",
    "CUSTOM_TITLE_DATE_ACTIVE_FROM" => "",
    "CUSTOM_TITLE_DATE_ACTIVE_TO" => "Срок публикации до",
    "CUSTOM_TITLE_IBLOCK_SECTION" => "Категория",
    "CUSTOM_TITLE_PREVIEW_TEXT" => "",
    "CUSTOM_TITLE_PREVIEW_PICTURE" => "",
    "CUSTOM_TITLE_DETAIL_TEXT" => "Текст объявления",
    "CUSTOM_TITLE_DETAIL_PICTURE" => ""
    ),
    false
);


?><?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/footer.php");?>