Trigger at start of scene and end of scene

Is there an efficient way to launch a trigger at the beginning of a scene and/or end of a scene? I know I can set a trigger at the beginning slide and end slide but that doesn't work well when things get rearranged. Same concept as jump to scene rather than jump to slide.

Example would be that a variable gets changed when a scene begins (in progress) and then ends (complete).

3 Replies