Nuclear reactor (basic script)

Hello Scripters!
(sorry for bas spelling)
A friend of me on Tekkit has made an Nuclear reactor
He asked me to make an computer controlled 1.
It doesn't need that much commands.
first only ON and OFF

this is the script I used…
(Im a beginner so thats why it might not work :P/>/> I try to get better!)
—————————————————————

correctpass = On
pass = Off

write("please Input Funtion (On/Off)")

if pass == (correctpass) then
write("reactor Starting...")
redstone.setOutput("Back", true)
else

if pass == (pass)
write("Reactor Shutting off")
redstone.setOutput("Back", false)
else

write("Incorrect comman choose On/Off")
os.shutdown()
end

————————————————————

the error is:

Bios:206: [String "nuclear"]:20: '<eof>' expected

Im on vacation…
now so ill se the reactions within 1/2 weeks!

every 1 thanks!

This post should have been placed in the Ask a Pro section.

Lyqyd is correct. However you need another "end"

Made some corrections. This version will continue running until it is told to exit, and it actually asks for input.

while true do
	--Spelling error.
	write("Please Input Function (On/Off/Exit)")
	--You were not taking any input, so it would have immediately shut the reactor off every time you ran the program.
	local input = tolower(read())
	if input == "on" then
		write("Reactor Starting...")
		--"Back" is not a side; "back" is.
		redstone.setOutput("back", true)
	elseif input == "off" then
		write("Reactor Shutting Off")
		redstone.setOutput("back", false)
	elseif input == "exit" then
		break
	else
		write("Incorrect command. Choose On/Off/Exit.")
	end
end

Thx very much!!!
It helped me good!
Next time ill
Place it in the Pro section!