So I upgraded one of my RB750G's to RouterOS v7.2 (beta) to try it out. Why not.

I usually set up a VPN and have to set routing marks. Well I can't seem to add a routing mark. Not from Winbox (only shows the main routing mark with no ability add one), not from Webfig (same issue) and not even from the CLI. In CLI, I get this error:

"input does not match any value of new-routing-mark:

What am I doing wrong here?