New to Nifi here. I was looking at this post. that talks about how to make a retry flow. In it there is a updateAttribute that sets the variable `retry.counter` to ${retrycounter:replaceNull('0'):plus(1)}. How come they set it to that instead of 1? This is the beginning of the flow and should always be 1, no? A similar thing is done with retry.maxcoutner - `${retry_maxcount:replaceNull('3')}` Please help me understand the logic behind this. Thanks! ... View more