i am trying to make a game like mineraft but i can’t make the under ground, once i tried it works but i delete it for no reason 🙁 heres the code:

from ursina import *
from ursina.prefabs.first_person_controller import FirstPersonController
from perlin_noise import PerlinNoise

app = Ursina()

player = FirstPersonController()

Sky()

noise = PerlinNoise(octaves=1, seed=312343123)

for i in range(50*50):
Voxel = Button(parent=scene, model=’cube’, color=color.green, collider=’box’, texture=’grass’)
Voxel.x = floor(i/50)
Voxel.z = floor(i%50)
Voxel.y = floor(noise([Voxel.x/24, Voxel.z/24]) * 5)

for underg in range(50*50):
Stone = Button(parent=scene, model=’cube’, color=color.gray, collider=’box’, texture=’brick’)
Stone.x = floor(i/50)
Stone.y = floor(i%50)
Stone.z = floor(i/50)

app.run()