Inventory Manipulation Test

os.loadAPI("kapi")

--Table of options
option = {"insert", "remove"}

--Variables
l = #option
n = 1 --For Option Table

while true do

 kapi.menu("Please select a option from the following:")
 for i = 1, l, 1 do
  if n == i then
   print(">" .. option[i] .. "<")
  else
   print(" " .. option[i])
  end
 end

 keypress = kapi.keyread()
 if keypress == keys.up then --Up Arrow
  if n == 1 then
   n = l
  else
   n = n - 1
  end
 elseif keypress == keys.down then --Down Arrow
  if n == l then
   n = 1
  else
   n = n + 1
  end
 elseif keypress == keys.enter then --Enter key
  if option[n] == "insert" then
      if turtle.detect() == true then
                turtle.select(2)
                turtle.drop()
            else
                print("Can't place inventory here!")
        end
   elseif option[n] == "remove" then
      if turtle.detect() == true then
                turtle.select(2)
                turtle.suck(1)
            else
                print("Can't remove inventory here!")
        end
    end
  end
end