add

\Bitrix\Main\Entity\AddResult public static
\Bitrix\Tasks\Task\FavoriteTable::add(
 array ,
 array 
);

This static method adds task to Favorites for specific (or current) user. This function does not check access permission.

Parameter	Description	Version
$data	Primary key.
$behaviour	Behaviour flags : `CHECK_EXISTENCE` - when `true`, function checks task's Favorites status (database query is added). By default value is `true`. When set to `false`, it can result in SQL error. `AFFECT_CHILDREN` - when `true`, all subtasks will be also added to favorites (`false` by default).