How do i get this button script with local variables working again?

Hello, I made a script short ago which would show a gui. It worked. This is the script that worked:

script.Parent.OpenedStoreFrame.BackgroundTransparency = 1
function leftClickopenStore()
    if script.Parent.OpenedStoreFrame.BackgroundTransparency == 1 then
        print("BGTransparency to 0")
        script.Parent.OpenedStoreFrame.BackgroundTransparency = 0
    elseif script.Parent.OpenedStoreFrame.BackgroundTransparency == 0 then
        script.Parent.OpenedStoreFrame.BackgroundTransparency = 1
        print ("BGTransparency to 1")
    end
end


script.Parent.StoreFrame.StoreButton.MouseButton1Click:Connect(leftClickopenStore)

Then, my friend told me i could do it on a more easy way. I remade the script, but with a specific close button. First the open button was also the close button. But this script didnt work:

-- Defines GUI objects of store --
local OpenedStoreFrame = script.Parent.OpenedStoreFrame
local StoreText = script.Parent.OpenedStoreFrame.TextLabel
local CloseButton = script.Parent.OpenedStoreFrame.CloseButton
local VipGamepassIcon = script.Parent.OpenedStoreFrame.VipGamepass
local StoreOpenButton = script.Parent.StoreFrame.StoreButton
-- Makes store gui objects invisible at start of game --
OpenedStoreFrame.Visible = false
StoreText.Visible = false
CloseButton.Visible = false
VipGamepassIcon.visible = false
StoreOpenButton.visible = true

-- WORKING PART STOPS HERE --

-- Defines store button click functions --
script.Parent.StoreFrame.StoreOpenButton.MouseButton1Click:Connect(OpenStoreClicked)
script.Parent.OpenedStoreFrame.CloseButton.MouseButton1Click:Connect(CloseStoreClicked)
-- Defines store button function and detects click --
function OpenStoreClicked()
    if OpenedStoreFrame.Visible == false then
        OpenedStoreFrame.Visible = true
        StoreText.Visible = true
        VipGamepassIcon.Visible = true
        CloseButton.Visible = true
        StoreOpenButton.Visible = false
        print("StoreGUIVisible")
    end
end

-- Defines store closing button function and detects click --
function CloseStoreClicked()
    if CloseButton.Visible == true then
        OpenedStoreFrame.Visible = false
        StoreText.Visible = false
        VipGamepassIcon.Visible = false
        CloseButton.Visible = false
        StoreOpenButton.Visible = true
        print("StoreGUIHidden")
    end
end

It didnt work. We tried a local script, removing the local tags in front of the variables, and much more, but it didnt work. How can i get this to work? did i make a mistake in the code? also, the button click wasnt detected at all because the print text wasnt shown in the output.