Use skillup tomes

skillup.lua

_addon.name = 'skillup'
_addon.author = 'Senotaru (Asura)'
_addon.version = '0.0.1'
_addon.lastUpdate = "2018.18.03"
_addon.commands = {'skillup'}

require('luau')
require('tables')
require('strings')

local packets = require('packets')

local isSkilling = false
local skillItem = ''


function addToChat(message, color)
    color = color or 207
    windower.add_to_chat(color, message)
end

function arrayHas(array, value)
    for index, key in ipairs(array) do
        if (key == value) then
            return true
        end
    end

    return false
end

function startSkillup()
    addToChat(' ')
    addToChat('Starting Skillup')
    isSkilling = true;
end

function stopSkillup()
    addToChat(' ')
    addToChat('Finished Skillup')
    isSkilling = false
end

function setItem(item)
    skillItem = item
end

function mainLoop()
    if windower.ffxi.get_player().status == 0 then
        useItem(skillItem)
    end

    if isSkilling then
        mainLoop:schedule(2.5)
    end
end

function useItem(item)
    windower.send_command(string.format('input /item "%s" <me>', item))
end

windower.register_event('load', function ()
    addToChat('Welcome!')
    addToChat('   "//skillup start <item name>"  Start using an item', 89)
    addToChat('   "//skillup stop" to stop', 89)
end)

windower.register_event('addon command', function(command, ...)
    command = command and command:lower() or 'help'
    addToChat('command: ' .. command, 89)

    local args = T{...}:map(string.lower)
    local itemName = table.concat(args," ")

    setItem(itemName)

    if arrayHas({'start', 'go', 'on'}, command) then
        startSkillup()
        mainLoop()
    elseif arrayHas({'stop', 'no', 'off'}, command) then
        stopSkillup()
    end
end)

Does this still work? Do you use it as a script or do you load it as a plugin?

Thanks!