How to add a variable like {=this.Name} to a regular Bitrix field?

Question

1C-Bitrix

There is a catalog element, it has an SEO tab. Variables of the type {=this.Name} {=this.catalog.price.BASE} are available in the fields of this tab. I am attaching a screenshot
:

If, for example, you set the variables in the "Details" tab in the same way, the

variables will not be substituted, they will be displayed simply as text.
How to make it possible to substitute such variables in the text "detailed"?

Answer 1

Variables on the SEO tab are not processed in the fields of other tabs. They are for the SEO tab only.
If you want to use them in detail, then you need to write your own handler for such variables in your template.
For example, you decide to use {=this.Name} in the detail field.
You need to do something like this

$arResult['DETAIL_TEXT']=str_replace('{=this.Name}', $arResult['NAME'], $arResult['DETAIL_TEXT']);

For the price, you need to get the desired price in the format you need and write a replacement in approximately the same way.
And so with all the variables you want to use

Answer 2

replace in component template