Need to reset kWh manually every two months

So, I have been able to create a cron job that submits a call to an input. That input then zero’s out my 3 feeds. I haven’t tested it extensively, but it seems to work.

Here is the cron job I have set up. It outputs a message that cron then emails to me. It’s a bit unnecessary but it’s only once a month:
0 0 27 * * if [[ $(/usr/bin/curl --data "node=cron&data={flag:2}&apikey=XXXb5b4e358bd451001095" "http://10.92.68.198/emoncms/input/post" -s -o /dev/null) -eq 0 ]] ; then echo "emoncms reset successful"; else echo "emoncms reset failed"; fi

This is the input processing I have for the feeds: