expected string -> rednet.send()

Hello there, most of the time fidling around for a few hours I can make things work for me. I just started learning programming and I have a litle problem that I can't seem to solve.

I'm trying to make a lift with turtles since there are no frames and redpower yet in Feed the Beast :(/>

It works but I recieve this error: rednet:350: string expected, this has probably to do with tArgs part… I think :)/>

The problematic code I use to send to my turtles

tArgs = {...}
up = (tArgs[1])
down = (tArgs[2])

rednet.open("top")
rednet.send(9, tArgs[1])
rednet.send(9, tArgs[2])

What my turtles use to recieve it (I want it to be two if statements if possible)

print("Lift program running, hold CTRL T to terminate")
rednet.open("left")
repeat
local id, msg = rednet.receive()
if msg == "up" then
  for i=1, 5 do
  turtle.up()
  end
  else
	for x=1, 5 do
  turtle.down()
  end
end
until nil

SOLVED

tArgs = {...}
rednet.open("top")
rednet.send(9, tArgs[1])

Try this.

tArgs[1] = "up"
tArgs[2] = "down"

Otherwise, Lua thinks you're just declaring a global variable and setting it to whatever's in tArgs[1] or tArgs[2]. Then, when you send it over Rednet, it's blank and not a string, which is what rednet.send() is expecting.