Script Not Changing Properties Of Gui When Looping Through Table Of Properties?

It is supposed to make the gui fade in but it doesnt change any of the properties but it prints all of them fine?

local ui = script.Parent
local Panel = ui.Panel
local Open = ui.Open

local isOpen = false
local fading = false

local Props = {
    ["Frame"] = "BackgroundTransparency",
    ["TextButton"] = {
        "BackgroundTransparency",
        "TextTransparency"
    },
    ["ImageLabel"] = "ImageTransparency",
    ["TextLabel"] = {
        "BackgroundTransparency",
        "TextTransparency"
    }
}

function checkType(ins)
    if ins.ClassName == nil then
        return typeof(ins)
    elseif ins.ClassName ~= nil then
        print(ins.ClassName)
        return ins.ClassName
    end
end

function fadeIn()
    fading = true
    for _, ins in pairs(Panel:GetDescendants()) do
        local typ = checkType(ins)
        if Props[typ] then
            for i = 1, 0, -0.1 do
                wait(0.1)
                if checkType(Props[typ]) == "table" then
                    for _, prop in pairs(Props[typ]) do
                        print(prop)
                        ins[prop] = ins[prop] + i
                    end
                elseif typeof(checkType(Props[typ])) == "string" then
                    print(Props[typ])
                    if typeof(Props[typ]) == "table" then
                        for i, prop in pairs(Props[typ]) do
                            ins[prop[i]] = ins[prop[i]] + i
                        end
                    else
                        ins[Props[typ]] = ins[Props[typ]] + i
                    end
                end
            end
        end
    end
    fading = false
end

function fadeOut()
    fading = true
    for _, ins in pairs(Panel:GetDescendants()) do
        local typ = checkType(ins)
        if Props[typ] then
            for i = 0, 1, 0.1 do
                wait(0.1)
                if checkType(Props[typ]) == "Table" then
                    for _, prop in pairs(Props[typ]) do
                        ins[prop] = ins[prop] + i
                    end
                elseif checkType(Props[typ]) == "String" then
                    ins[Props[typ]] = ins[Props[typ]] + i
                end
            end
        end
    end
    fading = false
end

Open.MouseButton1Click:Connect(function()
    if not fading then
        if isOpen then
            fadeOut()
            isOpen = false
            return
        elseif isOpen == false then
            fadeIn()
            isOpen = true
        end
    end
end)