Text goes from bottom to top instead of top to bottom?

I made a script that types a string per input. It works just fine just not as intended. Heres the code (snatch if you want)

local char = require(script.Code).data
local last = 0
game:GetService("UserInputService").InputBegan:Connect(function()
    last -= 1
    for i = -1,char:len(),5 do
        local code = ""
        code = code .. char:sub(last)
        script.Parent.Text = code
    end
end)