Player has a boolvalue that is true but why does this GUI not appear?

I'm working on an Inventory system, I have run into a problem that basically doesn't make a GUI appear if the player has a BoolValue thats value is true.

Here is the code:

--<< Variables >>--
local plr = game.Players.LocalPlayer
local bool = plr.ShopItems.Knives

--<< Frames >>--
local bg = script.Parent
local knifeinv = bg.Knives
local revinv = bg.Revolver
local abilinv = bg.Abilities
local petinv = bg.Pets
local radioinv = bg.Radios
local newknife = knifeinv.Template:Clone()

if bool.Common.Value == true then
	newknife.Visible = true
	newknife.Name = "KnifeA"
	newknife.Rarity.ImageColor3:FromRGB(43,125,43)
	newknife.Text = "Starter"
else
	return false
end

if bool.UnCommon.Value == true then
	newknife.Visible = true
	newknife.Name = "KnifeB"
	newknife.Rarity.ImageColor3:FromRGB(43,125,43)
	newknife.Text = "Skies"
else
	return false
end

If you can help, please do and thank you for taking the time to read this

Since the code isn't inside an event or a loop, the if statements only run when the script is created. You can use the following event to see when it's value changed:

boolValue = bool.Common

boolValue.Changed:Connect(function()
	print(boolValue.Value)
end)