[Program Help - Computer Craft]

I tried to start a program to get my maintained nuclear reactor working, but everytime i type "maintain" and hit enter, the program doesnt start. can anyone help?

function.flush()

shell.run("redpulse", "right", "64, "0.5")

end

function.rebuild()

shell.run("redpulse", "top", "46", "0.5)

sleep(5)

shell.run("redpulse", "left", "7", "1")

sleep(5)

shell.run("redpulse", "top", "1", "5")

end

while true do

if rs.getInput("bottom") then

rs.setOutput("back", true)

flush()

rebuild()

rs.setOutput("back", false)

end

shell.run("redpulse", "left", "1", "0.5")

end

return

when i type maintain and hit enter, i get the error code

bios:206: [string "maintain"]:1: '<name>'

expected