I know it's something about set_task.
I found this, but I don't understand a few things. set_task ( Float:time, const function[], id = 0, parameter[]="", len = 0, flags[]="", repeat = 0 )
1. Where do I need to put id if I want to make the function repeat on server and not bind on some player?
2. What is a "parameter" and "len" in set_task?