How to pass links from rank math seo breadcrumbs to breadcrumb microdata?

Question

WordPress

Good afternoon!

<script type="application/ld+json">
{
 "@context": "http://schema.org",
 "@type": "BreadcrumbList",
 "itemListElement":
 [
  {"@type": "ListItem",
   "position": 1,
   "item":
   {"@id": "<?php echo home_url('/') ?>",
    "name": "Главная"}
  },
  {"@type": "ListItem",
  "position": 2,
  "item":
   {"@id": "[Url_2]",
     "name": "Категория 2 уровня"}
  },
  {"@type": "ListItem",
    "position": 3,
    "item":
   {"@id": "[Url_3]",
     "name": "Категория 3 уровня"}
  }
 ]
}
</script>

How to transfer data from rank math seo to this microdata?
How to implement it in this situation? Links can be either two "main-category" or three "main-products-cream"