Storing images from [UIImage] array to Parse

I have an UIImage array, images, which is declared as

var images = [UIImage]()

I currently have pictures stored in there, and when I output it using the println() function, I get

[<UIImage: 0x195dc810>, <UIImage: 0x195da3e0>, <UIImage: 0x1950ab50>]

I was wondering how I could upload these images to Parse as one row.

Here is my full code of what I have now(not working):

@IBAction func saveToParse(sender: AnyObject) {

    for var i = 0; i < images.count; i++
    {
        var objectForSave:PFObject = PFObject(className: "NewLog")
        //error on this line below:  [(UIImage)] does not have a member variable named 'objectAtIndex'
        let imageData:NSData = NSData(data: UIImagePNGRepresentation(images.objectAtIndex(i) as! UIImage))

        var imageFile:PFFile = PFFile(data: imageData)
        imageFile.saveInBackgroundWithBlock({ (success:Bool, error:NSError?) -> Void in
            if success{
                objectForSave.setObject(imageFile, forKey: "Image")

                objectForSave.saveInBackgroundWithBlock({ (success:Bool, error:NSError?) -> Void in
                    if success{
                        //do smth
                    }else{
                        println(error)
                    }
                })

            }else{
                println(error)
            }

            }, progressBlock: { (progress:Int32) -> Void in

        })


    }     
    } 

Thank you.