[Freeswitch-users] Failed to pass arguments to lua script of FreeSwitch ('arg' and 'arg[i]' are nil values)

Hi all,   It's said we could access the arguments passed to lua script by variable 'arg[i]' where i > 0.   for example,  { lua dummy.lua  aa 100 } then, we will have as follows: arg[1] -> aa arg[2] -> 100   However, I always get 'nil' values for 'arg[i]' or 'arg' while running the lua script.   How can I pass and retrieve arguments or parameters to a lua script of FreeSwitch?