[hlds_apps] locking variables with hlds for counter-strike

[Ales Koprivnikar]

Hello, I have a little problem with hlds. I am renting servers to people. They get ftp access to the server, a web interface restart and the ip+rcon pw. That means they have full control over the server. So i just need to lock the variable sys_ticrate to resonable value(like 200) so that 1 server wont eat up all the cpu. (this is ofcourse done in server.cfg but smart(!) server owners change this to like 10000 and that really plays tricks with the cpu usage). So is  there a way lock the variable in question?   Ty for you answers Best Regards             Ales