connection-bytes doesn't work as described in documentation

RouterOS RouterOS beta
1 
/ip firewall mangle add action=mark-connection chain=prerouting connection-bytes=5000000-0 connection-mark=HTTP connection-rate=2M-300M connection-state=established,related,new dst-address-list=!not_in_internet \
    new-connection-mark=HTTP_BIG passthrough=yes protocol=tcp

connection-bytes=5000000-0 doesn’t work in RouterOS v7.1beta1 (Chateau LTE12)- it is possible to setup only 0-xxxxx. I am unable to mark large transfers for QoS

I cannot find anything about new connection marking in new documentation.

2

it looks like it is just WebFig issue because above by mentioned command is possible to add over CLI