How to make 2 Ankulua script communicate?

I shared an Arena script to a friend of mine and it works fine. The problem starts when he reached the same stage where I am and we end up fighting because we ran the same script at the same time. The matching runs exactly 30 seconds then it will force start. How can I tell my friend's script not to enter the match within that 30 seconds I'm matching or vice versa? Please take note that we are on a different location(country).