Want to add creatures

So I want to add some creatures to my valguaro server the creatures are mana and owl in snowplains and ice desert, velos in tundra and redwoods, maewings in chalk hills and reaper queens in the drake trench is anyone able to provide me with the line of code I would need to use to get them to spawn in these locations, balanced of course

I’ve tried using this code but they haven’t spawned the locations are for valguero and the link you sent me for locations are only for replacing creature not adding new ones