Help me when i use a tool that tool was removed?

local itemsTable = 
game.Players.LocalPlayer.Inventory:GetChildren() -- or   folder:GetChildren()
local player = game.Players.LocalPlayer
local Enabled = false
game.StarterGui:SetCoreGuiEnabled('Backpack',false)
function UpdateInventory()
if Enabled == false then
Enabled = true
script.Parent.Backpack:ClearAllChildren()
for i,v in pairs(player.Inventory:GetChildren()) do
local Obj1 = Instance.new('TextButton',script.Parent.Backpack)
Obj1.Size = UDim2.new(1,0,0.05,0)
Obj1.BackgroundTransparency = 1
Obj1.TextScaled = true
Obj1.Text = v.Name
Obj1.Font = 'Cartoon'
Obj1.TextColor3 = Color3.new(0,0,0)
Obj1.MouseButton1Down:connect(function()
player.Character.Humanoid:UnequipTools()
player.Character.Humanoid:EquipTool(v)
end)
end
else
Enabled = false
end
end  
 script.Parent.Parent.Parent.OpenInventory.MouseButton1Down:connect(function()
UpdateInventory()
end) 
player.Backpack.Changed:connect(function()
if Enabled == false then Enabled = true UpdateInventory() end
if Enabled == true then Enabled = false UpdateInventory() end
end)

help me i when i use a tool, tool will insta remove

The main problem I see with the code is if Enabled == false then Enabled = true UpdateInventory() end

When the Backpack changes at all it runs this function Enabled starts false so when it's false you immediately set it to true and run UpdateInventory()

However, in UpdateInventory you then immediately run as if enabled == true and the only thing it does is set Enabled = false.

This makes it so that your script never actually runs Enabled == false in the UpdateInventory function