Actually, you don't need forceend.
If the mission is ended by a trigger end#1, end#2 etc, then the win outro is played automatically after the debriefing.
If the mission is ended by a trigger type loose, then the loose outro is played automatically.
That's it. Use the drop down menu on the right of the editor screen to select "Outro" (rather than mission), place you units and your camera triggers/scripts, and away you go.