Remaining time or counter

[Novodk]

When i try to run this scrip it says: "2023.05.26 21:38:52","stairc","Resident script:38: attempt to index global 'event' (a nil value)
stack traceback:"

And can someone please post the newest script? there is so many variations in here!

Code:

-- ** Staircase logic with external time object and retriggering on input object Version 3.2 ** --
-- ****************************** Created by Erwin van der Zwart **************************** --
-- ************************************** SET PARAMETERS ************************************ --

-- Set input address
AddressInput = '4/0/1' -- 01. 1 bit (boolean)
-- Set output address
AddressOutput = '32/1/6' -- 01. 1 bit (boolean)

-- Set external time address (optional)
AddressExternalTime = '55/1/4' -- 07. 2 byte unsigned integer

-- Use time left indication
UseTimeLeft = true -- Set to false if no time left indication is used

-- Set feedback adress of time left indication (optional)
AddressTimeLeft = '32/1/5' -- 255 byte string

-- Set blocking address
AddressBlocking = '32/1/7'

-- Set time delay (Used when external time is not available)
SetDelay = 20 -- 2 minutes

-- Seconds or Minutes
SetSec = true -- Set to false for Minutes

-- Set factor delay (Multiplies Delay)
SetFac = 1

-- Logic can be turned of by value 0
Off_by_Value_Zero = false

-- ************************************** END PARAMETERS ************************************ --
-- *************************** DON'T CHANGE ANYTHING UNDER THIS LINE ************************ --

Input_Value = event.getvalue()
if Off_by_Value_Zero == false and (Input_Value == false or Input_Value == 0) then
return
else
tpid = storage.get('PID:' .. _SCRIPTNAME)
if tpid == nil then
     pid = os.getpid()
     storage.set('PID:' .. _SCRIPTNAME, pid)
else
   pid = os.getpid()   
   storage.set('PID:' .. _SCRIPTNAME, pid)
   os.kill(tpid, signal.SIGKILL)
end

blocking = grp.getvalue(AddressBlocking)
if not blocking then
   return
end

function Calculate_Time(StairCaseTime)
   if StairCaseTime > (86400 -1) then
     StairCaseTime = (86400 -1)
   end
   local hours = math.floor(StairCaseTime / 3600 % 24)
   local minutes = math.floor(StairCaseTime / 60 % 60)
   local seconds = math.floor(StairCaseTime % 60)
   time = {
     day = 0,
     hour = hours,
     minute = minutes,
     second = seconds,
   }
   time =string.format('%02d:%02d:%02d',time.hour,time.minute,time.second)
   return time
end
if Input_Value == true or Input_Value == 1 then
   ValueExternalTime = grp.getvalue(AddressExternalTime) or SetDelay
   if SetSec == true then
     Multiply_Seconds = 1
   else
     Multiply_Seconds = 60
   end
   StairCaseTime = ValueExternalTime * Multiply_Seconds * SetFac
   ValueOutput = grp.getvalue(AddressOutput)
   if ValueOutput == false then
     grp.write(AddressOutput, true)
   end
   if UseTimeLeft == true then
     if StairCaseTime > 0 then
       time = Calculate_Time(StairCaseTime)
       grp.update(AddressTimeLeft, time)
       repeat
         StairCaseTime = StairCaseTime - 1
         time = Calculate_Time(StairCaseTime)
         grp.update(AddressTimeLeft, time)
         os.sleep(1)
       until StairCaseTime == 0
     end   
   else
     os.sleep(StairCaseTime)
   end
   grp.write(AddressOutput, false)
elseif Input_Value == false or Input_Value == 0 then
   ValueOutput = grp.getvalue(AddressOutput)
   if ValueOutput == true then
     if UseTimeLeft == true then
       time = Calculate_Time(0)
       grp.update(AddressTimeLeft, time)
     end
     grp.write(AddressOutput, false)
   end
end
storage.delete('PID:' .. _SCRIPTNAME)
end