Where is the error in searching for an infoblock element by a custom property in 1C-Bitrix?

Question

1C-Bitrix

I'm trying to find an infoblock element by a custom property. But the value is the same.

foreach ($docTypeElemList as $docTypeElem) {
    $thisSearchArr = [
      "IBLOCK_ID"=>$arParams['IB_DOC'],
      "ACTIVE"=>"Y",
      'IBLOCK_SECTION_ID'=>$docInnerFolder['ID'],
      'F_BOND_TYPE'=>$docTypeElem['ID'] // Пользовательское свойство
    ];
    pr($thisSearchArr); // Вывод на экран массива поиска
    $thisDocSearch = CIBlockElement::GetList($reqSort, $thisSearchArr); // Поиск
    if ($thisDocEl = $thisDocSearch->GetNextElement()) { // Получение элемента (он должен быть один
      $thisDoc = $thisDocEl->GetFields();  // Получение списка полей
      pr($thisDoc['ID']); // Вывод на экран ID найденного элемента
    }
  }

Here is what was displayed on the screen:

File: /local/components/module/catalog.documentation.cat/component.php [19]
Array
(
[IBLOCK_ID] => 4
[ACTIVE] => Y
[IBLOCK_SECTION_ID] => 37
[F_BOND_TYPE] => 50
)
File: /local/components/module/catalog.documentation.cat/component.php [23]
122
File: /local/components/module/catalog.documentation.cat/component.php [19]
Array
(
[IBLOCK_ID] => 4
[ ACTIVE] => Y
[IBLOCK_SECTION_ID] => 37
[F_BOND_TYPE] => 51
)
File: /local/components/module/catalog.documentation.cat/component.php [23]
122

Here it says that you need to check the option "Property values ​​are included in the search" in the property settings.
But there is no such option!