[2022] World size

The maximum height cannot be adjusted, you can adjust the height for world generation in WorldGeneration.eco at this config:
"Height": 160,

The height is limited by maximum integer value of height multiplicated with width and length of the game world. The server will crash when that is execeeded.

You can find that info here: https://wiki.play.eco/en/Server_Configuration#Change_World_Size