How do I Preserve Arrays Across Layouts?

First I need an array to store all the properties of spells so it needs to be permanent and present throughout all layouts. Array is like an object type not a variable so how do I preserve that data between layouts?

Also, the array is getting very long so how could I just preset the values of the array instead of putting it in one by one in the actions?

The Array is global by default, so the data persists across Layouts. You can make a JSON object and load it, but it's not pretty. You can look at the CSV plugin also.

Thanks. Is there any way to convert from an excel file?

That's what the CSV plugin does: