[Solved] ATL and ImageDissolve Problems

[spongy]

Hello. I apologize if there's already a thread about this/these but I can't seem to find any. First of all, my problem with ATL. I'm trying to implement series of gold colored image dissolving transitions in a background. This is my method:

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image bg bookgoldenflash:
    "book.png" with goldenflash
    pause 1.0
    "book.png" with goldenflash
    pause 1.0
    repeat

The code is before the label start, I'm not sure if it's suppose to be there for it to work, and since I'm defining an image, I'm assuming it's the proper place to put it. How do I call that animated image into the actual game script? I used

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scene bg bookgoldenflash

but I don't know if it does work because my ImageDissolve won't work too.
I defined goldenflash with

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init:
    define goldenflash = ImageDissolve("golden_transition.png", 2.0, 8)

but for some reason, it doesn't work, and only shows the same background.
If there's a better way to implement the flash thing, please do tell.

[Alex]

The dissolve transition is showing a new image and hiding an old one at the same time, so when you show the same image with dissolve there will be no visible changes.
Maybe a fade transition is what you are looking for?
http://www.renpy.org/doc/html/transitions.html#Fade

[spongy]

Thanks! Sorry, not very good at scripting. I was thinking that the function of ImageDissolve was to show an image then remove it slowly by reducing it's opacity. Anyway, I did use fade, but the effect wasn't good enough. I used ImageDissolve thinking that I can implement a fade-like transition, with circle glow. Thanks again.