This reload script doesn't work and doesn't change any values, what is wrong?

I tweaked this gun script to add gun animations, and edited the reload, but the reload doesn't work, nor does it change any of the values, what is wrong here?

    --//Reload Event
            mouse.KeyDown:connect(function(key)
                key:lower()
                if key == "r" then
                    if not isReloading then
                        if maxAmmo.Value > 0 then
                            isReloading = true
                            local ammoneeded = (clips.Value - ammo.Value)
                            wait(reloadTime.Value)
                            ammo.Value = (ammo.Value + ammoneeded)
                            maxAmmo.Value = (maxAmmo.Value - ammoneeded)
                            isReloading = false
                            end
                        elseif ammoneeded > maxAmmo.Value then
                            isReloading = true
                            wait(reloadTime.Value)
                            ammo.Value = (ammo.Value + maxAmmo.Value)
                            maxAmmo.Value = 0
                            isReloading = false
                        end
                    end
                end
            end
        end
    end)
end)

rest of the script

--//Variables
local plr = game.Players.LocalPlayer
local tool = script.Parent.Parent
local hole = tool.Hole
local handle = tool.Handle
local s = tool.Sights
local sb = tool.SightsBack
local sl = tool.Slide
local slb = tool.SlideBack
local debounce = true
local config = tool.Config
local range = config.Range
local dmg = config.Damage
local coolDown = config.CoolDown
local clips = config.Clips
local ammo = config.Ammo
local maxAmmo = config.MaxAmmo
local allowTracing = config.AllowTracing
local reloadTime = config.ReloadTime
local isReloading = false

--//Events
tool.Equipped:connect(function(mouse)
    tool.Activated:connect(function()
        if not isReloading then
            if ammo.Value > 0 then
        if debounce then
            --//Doesn't allow spamming
            debounce = false
            --//Gunani
            s.Transparency = 1
            sl.Transparency = 1
            sb.Transparency = 0
            slb.Transparency = 0
            --//Ray Get, Set
            local ray = Ray.new(hole.CFrame.p, (mouse.Hit.p - hole.CFrame.p) * range.Value)
            local hit, position = workspace:FindPartOnRay(ray, plr.Character, false, true)

            --//Bullet Tracing
            if allowTracing.Value == true then
                --//Make part
                local trace = Instance.new("Part", workspace)
                trace.Material = Enum.Material.Neon
                trace.BrickColor = BrickColor.new("White")
                trace.CanCollide = false
                trace.Anchored = true
                trace.Transparency = 0.5

                --//Show Direction
                local distance = (hole.CFrame.p - position).magnitude
                trace.Size = Vector3.new(0.2, 0.2, distance)
                trace.CFrame = CFrame.new(hole.CFrame.p, position) * CFrame.new(0, 0, -distance/2)

                --//Remove debris
                game:GetService("Debris"):AddItem(trace, 0.1)
            end

            --//Hit Detection
            if hit then
                local humanoid =  hit.Parent:FindFirstChild("Humanoid")
                if humanoid then
                    if hit.Name == "Head" then
                        --//Double damage on headshots
                        humanoid:TakeDamage(dmg.Value*2)
                    else
                        --//Normal Damage on body shots
                        humanoid:TakeDamage(dmg.Value)
                    end
                end
            end
            wait(.1)
            s.Transparency = 0
            sl.Transparency = 0
            sb.Transparency = 1
            slb.Transparency = 1
            wait(coolDown.Value - .1)
            debounce = true
        end
            else
            --//Out of Ammo
        end
    end
    --//Reload Event
            mouse.KeyDown:connect(function(key)
                key:lower()
                if key == "r" then
                    if not isReloading then
                        if maxAmmo.Value > 0 then
                            isReloading = true
                            local ammoneeded = (clips.Value - ammo.Value)
                            wait(reloadTime.Value)
                            ammo.Value = (ammo.Value + ammoneeded)
                            maxAmmo.Value = (maxAmmo.Value - ammoneeded)
                            isReloading = false
                            end
                        elseif ammoneeded > maxAmmo.Value then
                            isReloading = true
                            wait(reloadTime.Value)
                            ammo.Value = (ammo.Value + maxAmmo.Value)
                            maxAmmo.Value = 0
                            isReloading = false
                        end
                    end
                end
            end
        end
    end)
end)