I'm such a noob in LUA/FAR macro system

So.
I like to call a LUA script-file "myscript.lua" from commandline (for example), and like to pass some arguments to it.
How I can get values of the passed arguments in "myscript.lua"?
I tried "arg[1]" which is nil and read whole luafar_manual.chm & macroapi_manual.en.chm + I read all the internet but I did not get an answer. Seems Google is not my friend?

Thanks for your help!