Light scenes KNX

[khalil]

This example will dim 3 lights from 0% to 100% in 10% steps with 0.2 seconds delay between each step. You can adjust the step/delay as needed and also add new group addresses to the list.

Code:

step = 10
delay = 0.2
addrs = { '32/1/15', '32/1/16', '32/1/17' }

for _, addr in ipairs(addrs) do
  obj = grp.find(addr)
  for value = 0, 100, step do
    obj:write(value)
    os.sleep(delay)
  end
end

excuse me admin dor this question, it's for learning.
why do you use grp.find.
could we use grp.write(add,value) instead