Vision Framework Accessing Text as String

Does Vision API in iOS 11 have the ability to return the actual text as string which it is detecting.

    let textDetectionRequest = VNDetectTextRectanglesRequest(completionHandler: {(request, error) in
           
            guard let observations = request.results as? [VNTextObservation]
                else { fatalError("unexpected result type from VNDetectTextRectanglesRequest") }
           
            for observation in observations {
               
                for characterBox in observation.characterBoxes! {
                    print(characterBox)
                }
            }
           
        })
       
        textDetectionRequest.reportCharacterBoxes = true
       
        let handler = VNImageRequestHandler(cgImage: textImage.cgImage!, options: [:])
       
        guard let _ = try? handler.perform([textDetectionRequest]) else {
            return print("Could not perform text Detection Request!")
        }

Also looks like it only detect strings and not numbers. This means if the image contains 5,6 or any number it will NOT detect that.