only spawn in grass

init.lua

@@ -242,7 +242,7 @@ mobs:register_mob("horses:horse", {
 		end
 	end,
 })
-mobs:register_spawn("horses:horse", {"default:dirt_with_grass"}, 20, 8, 200, 1, 31000)
+mobs:register_spawn("horses:horse", {"default:grass_5"}, 20, 8, 200, 1, 31000)
 
 mobs:register_mob("horses:horse2", {
 	type = "animal",
@@ -285,7 +285,7 @@ mobs:register_mob("horses:horse2", {
 		end
 	end,
 })
-mobs:register_spawn("horses:horse2", {"default:dirt_with_grass"}, 20, 8, 150, 1, 31000)
+mobs:register_spawn("horses:horse2", {"default:grass_5"}, 20, 8, 150, 1, 31000)
 
 mobs:register_mob("horses:horse3", {
 	type = "animal",