Gimp, переменная в python-fu

(PF_SPINNER, "size", "Номер строки", 5, (1, 55, 1)),

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Hello World in GIMP Python

from gimpfu import *

def hello_world33(size) :
    end=55
    print()

register(
    "python_fu_hello_world33",
    "1",
    "2",
    "3",
    "4",
    "5",
    "start",
    "",      # Create a new image, don't work on an existing one
    [
        (PF_SPINNER, "size", "Номер строки", 5, (1, 55, 1)),
    ],
    [],
    hello_world33, menu="<Image>/File/Create")

main()