$APPLICATION->SetPageProperty not working?

Question

1C-Bitrix

The product needs to change the meta. In the file component_epilog.php I write:
$APPLICATION->SetTitle($seoname);
$APPLICATION->SetPageProperty("title", $seoname);
$APPLICATION->SetPageProperty("keywords", $seoname);
$APPLICATION->SetPageProperty("description", $seoname);
but the meta tags are not changed. What can be wrong?

Answer 1

Perhaps you are installing meta data below the component.
It is necessary to debug everything that is called below and check from which component / code section the data is set.
This thing works on the principle of deferred functions, i.e. set to the latest value.