Hello guys. 

how to increase the amount of loot in the wagons in the new update?

with a loot plugin. the containers are:

assets/content/vehicles/train/subents/wagon_crate_normal.prefab
assets/content/vehicles/train/subents/wagon_crate_normal_2.prefab
​

do you even have the lootable wagon on your map? I think it's broken.