computer redstone get

id like to know how i can get like when rdedstone is on on right side the computer sees it and does "something"
i tryed something like *when redstone.getInput("right") == true then
print("true")
else
print("false")
but cannot get it to work
thanks in advance

Split into new topic.

while true do
  os.pullEvent("redstone")
  if rs.getInput("right") then
    print("On!")
  else
    print("Off!")
  end
end

oke tnx.