Try this:
Code:
public change_time(id,level,cid)
{
new arg[32]
read_argv(1, arg, 31)
client_cmd(id, "amx_cvar anti_respawn_time %s", arg)
return PLUGIN_HANDLED;
}
If you don't return PLUGIN_HANDLED, the return value will be 0, which is PLUGIN_CONTINUE. That's why you get unknown command.
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