backing lightmap frame per frame automaticaly?

How can I automate the backing process, hmmm… let say I move the sun on 25 frame (morning to night) and I want to bake the lightmap frame per frame.
For now I must render EACH LIGHTMAP by hand!!!

Is there a way to automat this process?

Thanks

maybe through a script…

I m so bad at scripting, while Vlado is so good at coding… :lol: