Factorio Forums

Hehe, I was about to post this on modding interface request when I saw it xD.

I need to do this for serveral things, and im not sure if this will work for everything I want to do.

How do I use, and when is that script ran?

The script is run once per save that is loaded from version, that didn't contain the migration before as the first thing.
The script is not called on new games.

but how do I need to call the file or where do I need to put it.

It is done the same way as in base mod.
In the mod, you have directory migrations, in this directory there are lua files, and every file represents one migration.

cant acces the global table from the migration.