First login is a special event that occurs when a player logs in for the first time. If you log in, log out and try to login again, you’ll see that the “hello world” message isn’t printed again. This is because you’ve already triggered the first login event and it won’t happen again for this player unless you reset it. You can reset the event for everyone or a particular player by navigating to the scenario menu and navigating to the Resets options – as shown below. You need to use"restart from 1st login".