Zombie Spawn script broken, please help

Help and Feedback Scripting Support
11

Yeah, it does. I’m not entirely sure what’s causing the zombies to not spawn because there aren’t any errors.

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local SpawnDelta = os.clock()
local SpawnCooldown = 10


-- Set the duration of each day and night cycle (in seconds)
local dayDuration = 60
local nightDuration = 30

-- Set the time when night starts (in hours, 24-hour format)
local nightStartHour = 20
local nightEndHour = 6

-- Set the zombie spawn location
local zombieSpawnLocation = Vector3.new(-63.078, 0.5, 631.332)

-- Load the zombie model from ReplicatedStorage
local zombieModel = ReplicatedStorage:WaitForChild("Zombie"):Clone()

-- Function to spawn zombies
local function spawnZombies()
	local zombie = zombieModel:Clone()
	zombie.Parent = workspace
	zombie:SetPrimaryPartCFrame(CFrame.new(zombieSpawnLocation))
end

-- Function to switch between day and night
local function switchDayNight()
	if Lighting.ClockTime >= nightStartHour or Lighting.ClockTime < nightEndHour then
		print("time updated")
		-- It's night, spawn zombies
		if os.clock() - SpawnDelta > SpawnCooldown then
			SpawnDelta = os.clock()
			spawnZombies()
		end
	end
end

-- Function to update the time
local function updateTime(deltaTime)
	Lighting.ClockTime = Lighting.ClockTime + deltaTime / 10
end

-- Connect the functions to the appropriate events
game:GetService("RunService").Heartbeat:Connect(updateTime)
game:GetService("RunService").Heartbeat:Connect(switchDayNight)```