To be honest I am not sure.
I created both simulation.csv files and used what you suggested - the policy obviously doesn't do anything right now because the output is equal to 0 based on the lack of inputs and a default situation value of 0.

https://i.imgur.com/Zc6FRyD.jpg

I assume your paths/files are as follows?
My Games\Democracy4\mods\example_mod\config.txt
My Games\Democracy4\mods\example_mod\example.jpg
My Games\Democracy4\mods\example_mod\data\simulation\simulation.csv
My Games\Democracy4\mods\example_mod\translations\English\simulation.csv

If not perhaps you can try this this.
If the issue persists happy to jump on a Discord call and screen-share to see if I can spot anything that is wrong with your mod.
Cheers.

Just by looking at it I'm thinking that rogue " at the end of the effect might be causing problems. You only need double quotes if there is a bunch of different comma-separated values that should exist in a single cell.

Originally posted by cliffski:

Just by looking at it I'm thinking that rogue " at the end of the effect might be causing problems. You only need double quotes if there is a bunch of different comma-separated values that should exist in a single cell.

So in terms of the actual file if you looked at it in notepad it would have double quotes like "_global_liberalism, 0-(0.1*x)" in order to ignore the delimiter (in this case ',') so the file he gives above actually does nothing at all because it will read one effect column _global_liberalism and second effect column 0-(0.1*x).

Eitherway I tried it with extra quotations and such and it doesn't really care about the double quotes... it seems to cause issues with some of the overrides from my memory though.

No idea what this guys issue is :)

edit: I spent too much time testing what makes this game break xD

Eh it ended up being nothing on my part, just rebooted my PC and I could continue modding normally