How to add an additional class of the product card, provided that there is a checkmark in the product property?

Question

1C-Bitrix

Good afternoon. Please tell me how to add more. class to a list item in the catalog, provided that the product property has a checkmark ?
Tried to do so

<div class="col-xs-24 col-sm-12 col-lg-6 <?= $arResult["PROP_VALUE"]=="END_LIST" ?"card_nontarget": ""?>">

, but nothing works.

Answer 1

Check that this value is available to you on the detailed page, if not, enable it in the IB or component settings.
And it should be in the format

$arResult['PROPERTIES']['PROPERTIES_NAME']['VALUE']

And it's also possible that you are checking against XML_ID =="END_LIST"then

$arResult['PROPERTIES']['PROPERTIES_NAME']['XML_ID']

Answer 2

Should this value be stored in a variable?