How to change the product title in the bitrix product card?

Question

1C-Bitrix

How to change the title of the product in the product card of the catalog bitrix complex component?

The title is set in the SEO settings in the infoblock.
Tried doing the following in result_modifier and component_epilog(catalog.element/catalog/...):
- used

$APPLICATION->SetTitle($arResult['IPROPERTY_VALUES']['ELEMENT_META_TITLE']);

- used

$APPLICATION->SetPageProperty("title", $arResult['IPROPERTY_VALUES']['ELEMENT_META_TITLE']);

What could be the problem? What kind of files can have a header?

Answer 1

The result_modifier does not need to have a header, it is cached.
In component_epilog this is the right move.
You most likely call another component below, which overwrites the header.