then expected? I already wrote it!

So here is my code:

if rs.getInput("Back")=True then
rs.setOutput("Right")=True
sleep(1)
rs.setOutput("Right")=False
sleep(1)
rs.setOutput("Right")=True
sleep(1)
rs.setOutput("Right")=False
rs.setOutput("Back")=False
print("Door opened")
end
if rs.getInput("Back")=False then
rs.setOutput("Left")=True
sleep(1)
rs.setOutput("Left")=False
sleep(1)
rs.setOutput("Left")=True
sleep(1)
rs.setOutput("Left")=False
rs.setOutput("Back")=True
print("Door Closed")
end

But I keep getting the error:

bios:338: [string "door"]:1: 'then' expected

Im not sure why I'm getting this error please help!

This error message is covered in the sticky post that should be read before asking questions. Also, you'll want to use true and false instead of True and False. Functions that return booleans can be used by themselves or with a not in conditional statements for the most part.

You forgot an '=' and why do you capitalize true, back etc? Those should be lowercased

if rs.getInput("back") == true then

This can also just be

if rs.getInput("back") then

Since it checks if it is true.

The script is a little broken in many ways. I've fixed a portion of it, and I think you'll be able to fix the rest on your own. Just know that programming requires a good attention to detail, so if you get an error, double-check the script twice to make sure nothing's wrong.

if rs.getInput("back") then
  rs.setOutput("right", true)
  sleep(1)
  rs.setOutput("right", false)
  sleep(1)
  rs.setOutput("right", true)
  sleep(1)
  rs.setOutput("right", false)
  sleep(1)
  rs.setOutput("right", true)
  print("Door opened")
end