Why does TweenSizeAndPosition not work?

For some reason, the if statement works, but then the TweenSizeAndPosition doesn't run, but the Visible Part does. Does anyone know why the TweenSizeAndPosition doesn't run?

Code:

elseif script.Parent.Parent.ResetStage.Visible == true then
        script.Parent.Parent.ResetStage:TweenSizeAndPosition(
            UDim2.new(2.993, 0,0.75, 0),
            UDim2.new(4.568, 0,0.122, 0),
            Enum.EasingDirection.In,
            Enum.EasingStyle.Sine,
            1,
            true
        )
        wait(1)
        script.Parent.Parent.ResetStage.Visible = false
    end

This is the Whole Script:

script.Parent.MouseButton1Click:Connect(function()
    if script.Parent.Parent.StageShop.Visible == true then
        script.Parent.Parent.OpenStageShop.Visible = true
        script.Parent.Parent.CloseStageShop.Visible = false
        script.Parent.Parent.StageShop:TweenSizeAndPosition(
            UDim2.new(0.156, 0,0.035, 0),
            UDim2.new(0.403, 0,0.037, 0),
            "In",
            "Sine",
            1,
            true
        )
        wait(1)
        script.Parent.Parent.StageShop.Visible = false
    elseif script.Parent.Parent.ResetStage.Visible == true then
        script.Parent.Parent.ResetStage:TweenSizeAndPosition(
            UDim2.new(2.993, 0,0.75, 0),
            UDim2.new(4.568, 0,0.122, 0),
            Enum.EasingDirection.In,
            Enum.EasingStyle.Sine,
            1,
            true
        )
        wait(1)
        script.Parent.Parent.ResetStage.Visible = false
    end

    script.Parent.Visible = false
    script.Parent.Parent.OpenMenu.Visible = true
    script.Parent.Parent:TweenPosition(
        UDim2.new(-0.095, 0,0.22, 0),
        "In",
        "Sine",
        1,
        true
    )
end)