A LuaRef variable can point to any type of data—even a table! When a LuaRef variable points to a table, it can be indexed very naturally using brackets ([]). Consider the following Lua code:

velocity = {
    x = 7,
    y = 0,
    units = "miles"
}

velocity.debug = function()
    print (velocity.x .. ", " .. velocity.y .. " " .. units .. " / hour")
end

We can access, and even change, any variable located in the velocity table by using a LuaRef object. The following code sample demonstrates this:

LuaRef v = getGlobal(L, "velocity");
v["y"] = 6
v["units"] = "km"

v["debug"]();