I'm trying to make a upgrade system in my game that let's me upgrade the power of a weapon, but I don't seem to know what I'm doing. Help please.

local Players = game.Players
local Player = Players.LocalPlayer
local Character = Player.Character
local Items = {}
local Buttons = {}

function Search(location)
	for i,v in pairs(location:GetChildren()) do
		if v:IsA("Tool") then
			table.insert(Items, v)
		end
	end
end

function Refresh()
	for i,v in pairs(Buttons) do
		v:Destroy()
	end
	for i,v in pairs(Items) do
		local Button = script.Template:Clone()
		Button.Name = v.Name
		Button.Image = v.TextureId
		Button.LayoutOrder = i
		Button.Parent = script.Parent.ScrollingFrame
		table.insert(Buttons, Button)
		Button.MouseButton1Click:connect(function()
			if script.Parent.Selected.Value == nil or script.Parent.Selected.Value ~= v then
				script.Parent.Info.ItemName.Text = v.Name
				script.Parent.Info.ItemImage.Image = v.TextureId
				script.Parent.Info.UpgradeCost.Text = Button.UpgradeCost.Value
				script.Parent.Selected.Value = v
				if script.Parent.Selected.Value ~= script.Parent.Upgrading.Value then
					script.Parent.Location.Value = v.Parent
					script.Parent.Info.Upgrade.Label.Text = "Upgrade"
					script.Parent.Info.Upgrade.ImageColor3 = Color3.fromRGB(0,255,0)
					game.SoundService.ClickTwo:Play()
			elseif
			   script.Parent.Selected.Value == script.Parent.Upgrading.Value then
					script.Parent.Location.Value = v.Parent
					script.Parent.Info.Upgrade.Label.Text = "Nothing Selected"
					game.SoundService.ClickTwo:Play()
					end
			end
		end)
	end
end

function BackpackRefresh()
	Items = {}
	Search(Character)
	Search(Player.Backpack)
	Refresh()
end

BackpackRefresh()
Player.Backpack.ChildAdded:Connect(BackpackRefresh)
Player.Backpack.ChildRemoved:Connect(BackpackRefresh)

Character.ChildAdded:Connect(BackpackRefresh)
Character.ChildRemoved:Connect(BackpackRefresh)
Anonymous