So I downloaded Biomes O' Plenty on my server and it says (when I created a new world in singleplayer) that biomes o' plenty uses a custom worldtype for its biomes.
And for servers " The worldtype can be used on servers by changing the 'level-type' in servre,properties to 'BIOMESOP' (without quotes) "
How do I change the "level-type"
Do I just have to rename "DEFAULT" to "BIOMESOP" in th World tab?