Iterating Through a XML file using SWXMLHASH for swift

Here is my Code block for this,

var a = 0;

    let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
        data, response, error in

        if error != nil {
            println("error=\(error)")
            return
        }


        responseString = NSString(data: data, encoding: NSUTF8StringEncoding)!

        let xmlWithNamespace = responseString
        var xml = SWXMLHash.parse(xmlWithNamespace)

        var entity = xml["row"]["ftc"]["Entity"][a]


        if entity.element?.attributes["ID"] != nil {

            entity = xml["row"]["ftc"]["Entity"][a]
            //println(a)

            println(entity.element?.attributes["ID"])
            a++
        }else{
            println("Print We Have Reached Our Limit")
        }

    }
    task.resume()

I am trying to get a iterator go through and print out all the children and attributes of these inside and store them in a variable,

I have been looking everywhere for some help but swift and XML are just a headache,

any help to get me to iterate through the node would be amazing, I tried to use a while loop but it just crashed the program after giving me the nodes,

I am trying to use this while loop but even that won't work,

while entity.element?.attributes["ID"] != nil {
            entity = xml["row"]["ftc"]["Entity"][a]
            //println(a)

            println(entity.element?.attributes["ID"])
            a++
            break
        }

Help would be appreciated it.