I'm  trying to have cave-spiders spawn anywhere, i don't get a crash-error but they just don't spawn

 

Here's the line I'm using in the pre-int:

 

EntityRegistry.addSpawn(EntityCaveSpider.class, 10, 1, 2, EnumCreatureType.monster);

 

 

am i doing something wrong?

You did not specify a biome, which will spawn a spider.

But if there is nothing there its supposed to spawn them regardless of biome. Correct?

Ya that worked but is there a way to get them to spawn regardless of biome, other than putting every single biome in there?