ios - How to retrieve objects from firebase by key value

Question

I'm new to firebase and I have such structure of my firebase project

I want to get all objects, that "Interested" value is equal to "men"

I wrote such code, to get all object sorted by interes value:

let thisUserRef = URL_BASE.childByAppendingPath("profile")

thisUserRef.queryOrderedByChild("Interest")
     .observeEventType(.Value, withBlock: { snapshot in

     if let UserInterest = snapshot.value!["Interest"] as? String {    
          print (snapshot.key)  
     }
}

But I receive nil.

Answer 1

Waitting for answers