My function is not loading and the Output isn't saying anything?

My script has a Function for a Disaster, but it IS NOT WORKING! No Output Error either. Here's the script:

--Vals--
local DIP = false
local Blur = game.Lighting.DisasterBlur

--Disaster Functions--
function ZombieBreakIn()
	DIP = true
	Blur.Enabled = true
	script.Visible.Value = true
	script.Notice1.Value = "DANGER! DISASTER DETECTED!"
	script.Notice2.Value = "Zombie Infiltration Detected at Operations Center! Total Facility Lockdown in Progress!"
	wait(3)
	Blur.Enabled = false
	script.Visible.Value = false
	wait(0.25)
	Blur.Enabled = true
	script.Visible.Value = true
	script.Notice1.Value = "REPORT TO VAULT ASAP!"
	script.Notice2.Value = "Staff must now report to the Vault Sector for Role call! Security Team secure the location!"
	game.ReplicatedStorage.NPCZombies.Script.Disabled = false
	game.Workspace.Audio.Disasters.ZombificationEscape.Song:Play()
	Blur.Enabled = false
	script.Visible.Value = false
	game.ReplicatedStorage.MainDisasterScript.Lockdown.Value = true
	wait(15)
	game.Workspace.ZWallExplosion.Sound:Play()
	local num = 0.1
	repeat
		num = num +0.1
		game.Workspace.ZWallExplosion.Size = Vector3.new(num, num, num)
		wait(0.01)
	until num == 15
	game.Workspace.ZWallExplosion.Size = Vector3.new(0.1, 0.1, 0.1)
	game.Workspace.ZWall.Transparency = 1
	game.Workspace.ZWall.CanCollide = false
	repeat
		wait(0.1)
	until #workspace.NPCs:GetChildren() == 0
	Blur.Enabled = true
	script.Visible.Value = true
	script.Notice1.Value = "FACILITY CLEAR"
	script.Notice2.Value = "Facility is clear of Zombies! You may return to regular Operations!"
	game.ReplicatedStorage.NPCZombies.Script.Disabled = true
	game.Workspace.Audio.Disasters.ZombificationEscape.Song:Stop()
	Blur.Enabled = false
	script.Visible.Value = false
	game.ReplicatedStorage.MainDisasterScript.Lockdown.Value = false
	DIP = false
end

--Module--
while true do
	wait(30)
	if DIP == false then
		ZombieBreakIn()
	end
end

Bit of help. New game is nearly ready for Beta Testing.