Info from iframe

Describe the problem.
Hi,
I am trying to scrape the telephon number which shows up in a pop-up after clicking "CONTACTAR". (left side, under each advertisement)
The thing is, that the pop-up is an iframe, and it seems that I can't select anything inside.
Any help?
PS: I am just testing with the first one, so I haven't created elements yet.
Thanks

Url: https://www.milanuncios.com/anuncios-en-barcelona/?fromSearch=1&demanda=s

Sitemap:
{"_id":"milanuncios","startUrl":["https://www.milanuncios.com/ofertas-de-empleo-en-barcelona/?demanda=s"],"selectors":[{"id":"Service","type":"SelectorText","parentSelectors":["_root"],"selector":"div.aditem:nth-of-type(5) div.aditem-detail div.display-desktop","multiple":false,"regex":"","delay":0},{"id":"Area","type":"SelectorText","parentSelectors":["_root"],"selector":"div.aditem:nth-of-type(5) div.list-location-region","multiple":false,"regex":"","delay":0},{"id":"CONTACTAR","type":"SelectorPopupLink","parentSelectors":["_root"],"selector":"div#ph208072290.aditem-footer a.highlighted-button span","multiple":false,"delay":0}]}

Alright, I found a solution just in case someone finds it useful.

  1. Scrape all pages and get the URL of the iframe.
  2. Understand what modification those URL need in order to properly connect to the main page
  3. Modify all URL in bulk with Excel or similar
  4. Create a site with all the modified URL extracted
  5. Scrape info

The latest version now supports iframe scraping, and I have created a sitemap for this same site, milanuncios in this post: