How do you pass a variable through two functions?

I have a function that runs when a condition is met inside of another function. Here is my code:

local bullet = game.ReplicatedStorage.testbullet
local head = script.Parent:FindFirstChild("Head")
local ReplicatedStorage = script.Parent
local event = Instance.new("RemoteEvent", ReplicatedStorage)
event.Name = "bullet"
local debounce = false
local sound = Instance.new("Sound")
sound.Parent = head
sound.SoundId = "rbxassetid://392838370"
sound.Volume = 2
sound.Playing = false
local sound2 = Instance.new("Sound")

local function Hurt(Part)
	if debounce == false then
		if Part.Parent:FindFirstChild("Humanoid") then
			Part.Parent.Humanoid.Health = Part.Parent.Humanoid.Health-25
			debounce = true
			Part.BrickColor = BrickColor.new("Really red")
			Part.Material = "Neon"
			wait(1)
			Part:Destroy()
			wait(1)
			debounce = false
		end
	end
end
 
local function shootbullet()
    local debounce = false
    local Fireball = bullet:Clone()
	--local attachment = Instance.new("Attachment")
	--attachment.Parent = script.Parent.Parent:FindFirstChild("Left Arm")
	--local particles = game.ReplicatedStorage["Cyborg Assets"].particles.Attachment.ParticleEmitter:Clone()
	--particles.Parent = attachment
	--sound.Playing = true
	wait(0.7)
    Fireball.BrickColor = BrickColor.new("Institutional white")
    Fireball.Transparency = 0
    Fireball.TopSurface = 0
    Fireball.BottomSurface = 0
    Fireball.CanCollide = false
    Fireball.CFrame = head.CFrame*CFrame.new(0,0,-10)
    Fireball.Parent = game.Workspace
    local BodyVelocity = Instance.new("BodyVelocity")
    BodyVelocity.Parent = Fireball
	BodyVelocity.maxForce = Vector3.new(math.huge, math.huge, math.huge)
	BodyVelocity.velocity = head.CFrame.lookVector*50
	Fireball.Touched:connect(Hurt)
	--attachment:Destroy()
	--particles:Destroy()
	wait(10)
	Fireball:Destroy()
end
event.OnServerEvent:connect(shootbullet)

Is there a way to send the variable "Fireball" through the "Fireball.Touched:connect(Hurt)" little snippet of code?

You can pass a variable like this because it is already defined, you are just changing the value:

local value

clickdetector.MouseButton1Click:Connect(function() --Just an example function
	value = 1
end)

clickdetector2.MouseButton1Click:Connect(function() --Just another example function
	print(value)
end)

This will print 1 because it changes the value of the variable