Display time of object

[admin]

@Dré, you need to change the storage key ('ontime'), not the variable name:

Code:

Kitchen = grp.getvalue('1/4/4')            --'0 Verl. Kitchen (tm)'
ontime_Kitchen = 'ontime_kitchen'
output_Kitchen = '32/1/202'            --'Kitchen [timer on]'    

if Kitchen then
  if not storage.get(ontime_Kitchen) then
    storage.set(ontime_Kitchen, os.time())
    grp.update(output_Kitchen, '0 m')
  end
else
  storage.delete(ontime_Kitchen)
  grp.update(output_Kitchen, '')
end

Code:

ontime_Kitchen = 'ontime_kitchen'
output_Kitchen = '32/1/202'            --'Kitchen [timer on]'

time = storage.get(ontime_Kitchen)
if time then
  delta = os.time() - time
  minutes = math.floor(delta / 60)
  
  hours = math.floor(minutes / 60)
  minutes = minutes % 60

  if hours > 0 then
    res = hours .. 'h '
  else
    res = ''
  end
  
  res = res .. minutes2 .. ' minuten'
  grp.update(output_Kitchen, res)
end

If using multiple timers you can combine the scheduled/resident scripts into one.