Find form by inline subform criteria

Find form by inline subform criteria

Is it possible to filter down to a form using inline subform fields? For example, I have a Contact form with an inline subform "Phone_Numbers" that has a "Phone_Number" field. I'd like to be able to get contacts by their phone number, but I'm not sure how to set the criteria to filter. Initially I tried Contact[Phone_Numbers[Phone_Number == search_number]].

I was unclear from the below article if it was impossible or not.