Swift wont set background button image

import Foundation
import Parse
import UIKit

class MainMenu: UIViewController{

    var profileActionButtonTextValue: String = ""



    @IBOutlet weak var ProfilePicture: UIButton!


    @IBOutlet weak var ProfileActionButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()

        //Setting the label for the ProfileActionButton to the current users name(parse)
        ProfileActionButton.setTitle(profileActionButtonTextValue, forState: .Normal)

        //Attempting to retrieve current users profilepicture from parse and input into Profile Picture UIImageView

        if let userProfilePicture = PFUser.currentUser()?["profilepicture"] as? PFFile{
            userProfilePicture.getDataInBackgroundWithBlock({
                (imageData: NSData?, error: NSError?) -> Void in
                if (error == nil) {
                    let image = UIImage(data:imageData!)
                    if(image == nil){
                        print("nil")
                    }else{
                        self.ProfilePicture.setBackgroundImage(image, forState: .Normal)

                    }
                    }
            })
        }

    }

}