How to Mod Population Cap?

Hello Modders!

I’m a beginner modder and want to know how to make Tuning Pack mods that make the unlimited pop cap.
What i already know it’s how to make villager cost 0,1.

So any of you know how? seems can’t find the strings to edit the pop cap.

Thankyou

https://wiki.aoemods.com/wiki/Population_Cap

attributes-army-races
Roman’s vehicle pop means Prelate
Mongol’s vehicle pop means sheep