Script Works when testing but not online when published?

I have a bow script that works when i test play it in studio, but when i publish the game and play it online the GUI doesn't show up and the bow doesn't work. Why is that? Thanks for any help and suggestions!

local TOOL = script.Parent

local DAMAGE = 30
local RANGE = 50
local REST_TIME = 0.5
local CRIT_MULT = 2

local DEBOUNCE = true

local AMMO_TYPE = "ARROW"
local AMMO_BOX = TOOL.Ammo
local AMMO_GUI = TOOL.ScreenGui
local AMMO_NUM_LABEL = AMMO_GUI.Frame.TotalAmmoLabel
local AMMO_TYPE_LABEL = AMMO_GUI.Frame.AmmoTypeLabel
local CURRENT_SHOT = nil

function getPC()
	local char = TOOL.Parent
	local player = game.Players:GetPlayerFromCharacter(char)

	return player, char
end

function humanCheck(part)
	local parent = part.Parent

	if parent == nil then
		return false
	end

	local humanoid = parent:findFirstChild("ANIMAL")

	if humanoid ~= nil then
		return true
	end

	return false
end

function distanceCheck(part)
	local player, char = getPC()
	local head = char.Head

	local dist = (head.Position - part.Position).magnitude

	return (dist < RANGE)
end

function ammoCheck(part)
	local typeValue = part:findFirstChild("AmmoType")

	if typeValue ~= nil then
		return (typeValue.Value == AMMO_TYPE)
	end
end

function hasAmmo()
	local ammo = AMMO_BOX:GetChildren()
	local ammoNum = #ammo

	return (ammoNum > 0)
end

function canHit(part)
	local bool = false

	bool = (bool or humanCheck(part))
	bool = (bool and distanceCheck(part))
	bool = (bool and hasAmmo())

	return bool
end

function canPickup(part)
	local bool = false

	bool = (bool or ammoCheck(part))

	return bool
end

function attack(body_part, human)
	body_part = body_part.Name

	local health = human.HEALTH

	local final_damage = DAMAGE + CURRENT_SHOT.Damage.Value

	if body_part == "Head" or body_part == "Torso" then
		health.Value = health.Value - (final_damage * CRIT_MULT)
	end

	if body_part == "Right Arm" or body_part == "Left Arm" then
		health.Value = health.Value - (final_damage / CRIT_MULT)
	end

	if body_part == "Right Leg" or body_part == "Left Leg" then
		health.Value = health.Value - (final_damage)
	end
end

function updateAmmo()
	local ammo = AMMO_BOX:GetChildren()
	local ammo_num = #ammo

	CURRENT_SHOT = ammo[1]

	if CURRENT_SHOT ~= nil then
		AMMO_NUM_LABEL.Text = "Ammo: "..ammo_num
		AMMO_TYPE_LABEL.Text = "Current: "..CURRENT_SHOT.Name
	else
		AMMO_NUM_LABEL.Text = "No ammo!"
		AMMO_TYPE_LABEL.Text = ""
	end
end

function slash()
	local s = Instance.new("StringValue")
	s.Name = "toolanim"
	s.Value = "Slash"
	s.Parent = TOOL
end

function fire(v)


	local vCharacter = TOOL.Parent

	local vPlayer = game.Players:playerFromCharacter(vCharacter)
			

	local missile = TOOL.Bolt:Clone()

	-- find firing direction

	local v1 = -TOOL.Bolt.CFrame.lookVector.unit
	local v2 = v.unit
	

	local dot = (v1.x * v2.x) + (v1.y * v2.y) + (v1.z * v2.z)
	local ang = math.acos(dot)

	-- test if in cone
	if (ang < 3.14 / 8) then

	else
		-- not in cone, find projection
		 --n = v1 x v2
		--local n = Vector3.new(v1.y * v2.z - v1.z * v2.y, v1.z * v2.x - v1.x * v2.z, v1.z * v2.y - v1.y * v2.x)

		--return
	end

	
	--missile.CFrame = Tool.Bolt.CFrame + (Tool.Bolt.CFrame.lookVector * -8)
	missile.CFrame = TOOL.Bolt.CFrame + (v * 8)

	missile.Transparency = 0

	missile.Velocity =  v * 150

	missile.Name = "CrossbowBolt"

	missile.Elasticity = 0


	local force = Instance.new("BodyForce")

	force.force = Vector3.new(0,150,0)

	force.Parent = missile

	missile.BodyGyro.cframe = CFrame.new(Vector3.new(0,0,0), -TOOL.Bolt.CFrame.lookVector.unit)
	missile.BodyGyro.maxTorque = Vector3.new(5e5,5e5,5e5)



	local new_script = script.Parent.CrossbowBoltScript:clone()

	new_script.Disabled = false

	new_script.Parent = missile



	local creator_tag = Instance.new("ObjectValue")

	creator_tag.Value = vPlayer

	creator_tag.Name = "creator"

	creator_tag.Parent = missile

	
	missile.Parent = game.Workspace


end


TOOL.Enabled = true

function onActivated()


	if not TOOL.Enabled then

		return

	end

	TOOL.Enabled = false
	end

function onButton1Down(mouse)
	if not DEBOUNCE then return end

	DEBOUNCE = false

	local character = TOOL.Parent;
	local humanoid = character.Humanoid
	local targ = mouse.Target
	local targetPos = humanoid.TargetPoint
	local lookAt = (targetPos - character.Head.Position).unit
	
	
	if canHit(targ) then
		local enemy = targ.Parent
		local human = enemy.ANIMAL

		attack(targ, human)

		CURRENT_SHOT:remove()
		fire(lookAt)

	wait(2)

	TOOL.Enabled = true
	
		updateAmmo()	
	end

	if canPickup(targ) then
		targ.Parent = AMMO_BOX

		updateAmmo()
	else
		wait(REST_TIME)
	end

	DEBOUNCE = true
end

function onEquipped(mouse)
	local player, char = getPC()

	AMMO_GUI.Parent = player.PlayerGui
	updateAmmo()

	AMMO_BOX.Parent = player.Backpack

	mouse.Button1Down:connect(function()
		onButton1Down(mouse)
	end)
end

function onUnequipped()
	local player, char = getPC()

	AMMO_GUI.Parent = TOOL

	AMMO_BOX.Parent = TOOL
end


script.Parent.Activated:connect(onActivated)
TOOL.Equipped:connect(onEquipped)
TOOL.Unequipped:connect(onUnequipped)

Im not an expert on stuff like that, but lowercase C in script.Parent.Activated:connect() and other parts like that is deprecated and should be a capital letter.