upload images with alamofire 4.0

func postImages(_ orderId: String, images: [UIImage]) {

        var tmpImages = images
        Alamofire.upload(multipartFormData: {
            multipartFormData in
            multipartFormData.append(orderId.data(using: String.Encoding.utf8, allowLossyConversion: false)!, withName: "order")
            multipartFormData.append(UIImageJPEGRepresentation(images[0], 95)!, withName: "image", fileName: orderId + "_picture.jpg", mimeType: "image/jpg")
        }, to: UserOrderUploadImageURL, encodingCompletion: {
            encodingResult in
            switch encodingResult {
            case .success(let upload, _, _):
                upload.responseJSON {
                    response in
                    debugPrint(response)
                    tmpImages.removeFirst()
                    if tmpImages.count > 0 {
                        self.postAdvertImages(orderId, images: tmpImages)
                    }
                }
            case .failure(let encodingError):
                print(encodingError)
            }
        })