Aegisub extradata usage

extradata.lua

function foo(subs, sel, act)
    local data = {"some", "random", "junk"}
    for z, i in ipairs(sel) do
        local l = subs[i]
        l.extra.stuff = luabins.save(data)
        subs[i] = l
    end
    for z, i in ipairs(sel) do
        local l = subs[i]
        local success, thedata = luabins.load(l.extra.stuff)
    end
end

aegisub.register_macro("Extradata demo", "", foo)