Superclock :8: attempt to index ? (a nil value)

Hmm…

local mon = peripheral.wrap("side")
function round(num, idp)
local mult = 10^ (idp or 0)
return math.floor(num * mult +0.5) / mult
end
function loop ()
while true do
mon.clear()
mon.setCursorPos (1,1)
mon.setTextScale (3)
z = os.time ()
if z < 12 then
y = z
a = y%1
h = y - a
b = a * 60
m = round( B)/>
if m >= 10 then
min = m
elseif m < 10 then
min = "0"..m
end
if h < 1 then
hour = 12
elseif h >= 1 then
hour = h
end
x = hour.. ":"..min.." AM"
elseif z > 12 then
y = z - 12
a = y%1
h = y - a
b = a * 60
m = round( B)/>
if m >= 10 then
min = m
elseif m < 10 then
min = "0"..m
end
if h < 1 then
hour = 12
elseif h >= 1 then
hour = h
end
x = hour..":"..min.." PM"
end
mon.write(x)
sleep(1)
end
end
loop()

Trying to make clock

Having lots of issues, tried to fix some, probably just messed up more… so, it says:

Superclock :8: attempt to index ?
(a nil value)
Any help? Just want a clock that isn't tangent, but I guess I'd go with that one if need be… I've seen much better, though… thanks.

Split into new topic.

You have to actually replace "side" with the side that the monitor is on, like "left" or "back".

Yep, Lyqyd is right. And if your not that good, I suggest using the monitor program to simplify things. You can call it in a program like this:

shell.run("monitor", <Monitor Side>,  <Program Name>)

Hope this helps.