Cannot retrieve Mobile Number in Search API

[John Ryan Robles]

Hi i tried to create new field called **Mobile** managed property and mapped it to **Mobile,People:Mobile,ows_Mobile** crawled property connected to AD

    https://server.sharepoint.com/_api/search/query?querytext=%27accountname:%22*firstname.lastname*%22%...

However, it returns null. Maybe i am missing something.

Appreciated your help, thanks!

  [1]: https://i.stack.imgur.com/UlVbD.png

  [2]: https://i.stack.imgur.com/UJISJ.png