Syntax error, all those settings that can be set, limits, etc, are not created/invented by Team Ulysses.
They're inherent to Garry's mod. As WCA-Aids states, do some research on server.cfg... that file is used by almost every source game server available (and even non-source, but with different commands)
Gmod has it's own set of settings of course, but it still uses them
Team Ulysses didn't invent sbox_max<item> settings.
We only made them easier (better!)