Lua bios issue

Hi, i just started using lua and ComputerCraft today, so i do not know what the bios mean, so could anyone help me with this?

bios:206: [string "access"]:8: '=' expected

Here's the program:

term.clear()
term.setCursorPos(1.1)
write("Enter your passcode:")
x = io.read()
if x == "4086-597" then
print ("Access Granted")
print ("Have a nice day Glindir!")
redpulse back 1 10
else
print ("Access Denied")
end

it is a program to send a redstone signal to open an iron door if the correct passcode is entered (i originally wanted a floppy disk that has it, and i put it in a disk drive to gain access, but it is beyond me)

Can anyone figure this out?
Thanks!

Instead of redpulse back 1 10 do:
rs.setOutput("back",true)
sleep(10 / 2)
rs.setOutput("back",false)

Also, instead of io.read(), I would recommend this:

x = read("*")

It will bleep out the password.

or do shell.run("redpulse back 1 10") if you want it that way..

Teraminer, on 16 April 2012 - 08:31 PM said:

or do shell.run("redpulse back 1 10") if you want it that way..

Should be

shell.run("redpulse", "back", "1", "10")

luanub, on 16 April 2012 - 09:51 PM said:

Teraminer, on 16 April 2012 - 08:31 PM said:

or do shell.run("redpulse back 1 10") if you want it that way..

Should be

shell.run("redpulse", "back", "1", "10")

Not aimed at you luanub - but I'd just like to say that you should never rely on the behaviour of other programs in your program (as they could be changed) - it is much better to do the code route, as suggested by thesbros.

Cloudy, on 16 April 2012 - 09:53 PM said:

luanub, on 16 April 2012 - 09:51 PM said:

Teraminer, on 16 April 2012 - 08:31 PM said:

or do shell.run("redpulse back 1 10") if you want it that way..

Should be

shell.run("redpulse", "back", "1", "10")

Not aimed at you luanub - but I'd just like to say that you should never rely on the behaviour of other programs in your program (as they could be changed) - it is much better to do the code route, as suggested by thesbros.

I have to say I agree, in fact I hardly ever use the shell API in any of my programs. The only exception being to set gps coords in the startup files of my gps host.

Thanks for all of your help!
But there is still a problem: access:2: bad argument: int expected, got nil
was i supposed to put in

x = read(*)

or was i supposed to replace the asterisk? (And in my code I added quotes so I didn't get an unexpected symbol error)

term.clear()
term.setCursorPos(1.1)
write("Enter your passcode:")
x = read("*")
if x == "4086-597" then
print ("Access Granted")
print ("Have a nice day Glindir!")
redset.setOutput("back",true)
sleep(10/2)
redset.setOutput("back",false)
else
print ("Access Denied")
end

it should be
x = read("*")

The error is saying it received an empty value on line 2. Is this the code you used?

Change:

term.setCursorPos(1.1)

to:

term.setCursorPos(1, 1)

Arguments have to be separated by commas.

Thanks to all of you amazing people, my mistakes were corrected!
I hope that someday, I will be able to help others, and be able to remember you guys and this problem.
Thanks a bundle!
Glindir