How to use Feature Mod Element correctly for a Cave Biome?

Started by SparkleArts on Thu, 04/27/2023 - 08:10

Topic category: Help with modding (Java Edition)

I want to create a Mossy Cave Biome where the Stone Blocks are replaced by various Stones and where Brown Mushrooms are spawning.

But it seems not working for some reason.

Know someone how to setup a Feature Mod Element correctly?