Hello, i want to make a web surfing tariff plan .
:foreach i in=[/interface find type=pptp-in ] do={/interface monitor-traffic $i once do {:if ($received-bits-per-second > 512000) do {/queue simple add interface=$i max-limit=256000/256000 }}}
now, how can i get avarge bandwidth in 30 sec in traffic-monitor?
can anyone help me please, thanks 
2.9.51 mikrotik