ReadVoxels() returns nil

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1

For some reasons ReadVoxels() returns nil in my script, i’m guessing i did something wrong with region3, also it’s not a problem with my MousePos, i printed it and it is correct. My current code:

local Tool = script.Parent
local Handle = script.Parent.Handle

local MineEvent = script.Parent.Mine

MineEvent.OnServerEvent:Connect(function(Plr, MousePos)
	Handle.Break:Play()
	game.Workspace.Terrain:FillBall(MousePos, 6, Enum.Material.Air)
	
	local region = Region3.new(MousePos - Vector3.new(3,3,3), MousePos + Vector3.new(3,3,3))
	
	print(region)
	local materials, occupancies = game.Workspace.Terrain:ReadVoxels(region, 4)
	-- get material at the voxel at (1, 2, 3):
	local theMaterial = materials[1][2][3]
	print("Material: " .. theMaterial.Name) -- print the material

	-- get the percentage of space occupied at that same position
	local theOccupancy = occupancies[1][2][3]
	print("Occupancy" .. theOccupancy)

end)