Why can't I make an integer equal to another integer?

I'm making a gun, and when I reload it's supposed to make the interger "Ammo" equal to "MaxAmmo" (Value-wise). However, it does not equal to it. Any help?

Local Script:

local Player = game:GetService("Players").LocalPlayer
local Character = Player.Character
local Mouse = Player:GetMouse()
local Tool = script.Parent
local Reload = Tool:WaitForChild("Reload")
local Shoot = Tool:WaitForChild("Shoot")
local IsEquipped = false

local IsReloading = false
local IsShooting = false

local Damage = 25
local FiringRate = 1.5
local Accuracy = 0.5

local Ammo = Tool:WaitForChild("Ammo")
local MaxAmmo = Tool:WaitForChild("MaxAmmo")
local Gunshot = Tool:WaitForChild("Gunshot")

Tool.Equipped:Connect(function()
    IsEquipped = true
end)

Tool.Unequipped:Connect(function()
    IsEquipped = false
end)

Tool.Activated:Connect(function()
    if not IsShooting and Ammo.Value > 0 and not IsReloading then
        IsShooting = true
        Fire()
        wait(FiringRate)
        IsShooting = false
    end
end)

function Fire()
    local ray = Ray.new(Tool.Handle.CFrame.p, (Mouse.Hit.p - Tool.Handle.CFrame.p + Vector3.new(math.random(0-Accuracy,Accuracy),math.random(0-Accuracy,Accuracy),0)).unit * 300)
    local Part, Position = workspace:FindPartOnRay(ray, Player.Character, false, true)
    Shoot:FireServer(Tool,Position,Part,Damage)
    Ammo.Value = Ammo.Value - 1
    Gunshot:Play()
    print("Ammo: "..Ammo.Value.."")
end

function onKeyPress(inputObject, gameProcessedEvent)
    if inputObject.KeyCode == Enum.KeyCode.R then
        Reload:FireServer()
        IsReloading = true
        wait(1.018)
        IsReloading = false
    end
end

game:GetService("UserInputService").InputBegan:connect(onKeyPress)

Server-Sided Script:

local Tool = script.Parent
local Reload = Tool:WaitForChild("Reload")
local Shoot = Tool:WaitForChild("Shoot")
Reload.OnServerEvent:Connect(function()
    Tool.ReloadGun:Play()
    wait(1.018)
    Tool:WaitForChild("Ammo").Value = Tool:WaitForChild("MaxAmmo").Value
    print("Ammo: "..Tool:WaitForChild("Ammo").Value.."")
end)
Shoot.OnServerEvent:Connect(function(Player,Tool,Position,Part,Damage)
    local beam = Instance.new("Part", workspace)
    beam.BrickColor = BrickColor.new("Medium stone grey")
    beam.Material = "Metal"
    beam.Transparency = 0.25
    beam.Anchored = true
    beam.Locked = true
    beam.CanCollide = false     
    local distance = (Tool.Handle.CFrame.p - Position).magnitude
    beam.Size = Vector3.new(0.3, 0.3, distance)
    beam.CFrame = CFrame.new(Tool.Handle.CFrame.p, Position) * CFrame.new(0, 0, -distance / 2)      
    game:GetService("Debris"):AddItem(beam, 0.1)
    if Part then
        local humanoid = Part.Parent:FindFirstChild("Humanoid") 
        if not humanoid then
            humanoid = Part.Parent.Parent:FindFirstChild("Humanoid")
        end 
        if humanoid then
            humanoid:TakeDamage(Damage)
        end
    end
end)

Edit: There are no errors.