Mission end on waypoint completion

[BrendoB47 8]

So I have a mission where everything is just how I want it to be where you make your way across the map to a small town to regroup with friendly US forces.  I also have a waypoint set up with join/join and lead which lets you lead the group you rendezvous with.  After that, I want the mission to end.  I gave the waypoint a timer in it so this doesn't happen instantly.  Is there anything I can put in the init line of the waypoint to make the mission end?  Due to some cycle waypoints and such, another trigger wouldn't work for this.