Hooking the **Matinee** up to the **TriggerBox**
In this step, we will hook up the Matinee to the TriggerBox so that it opens when entering the trigger and closes when exiting the trigger.
From the Toolbar menu, select Blueprints and click the Open Level Blueprint button.
Minimize the Level Blueprint and through the Level Viewport or World Outliner, Left-Click on the MatineeActor to select it.
Open the Level Blueprint window and Right-Click in the Event Graph, then in the context menu, select the Add Reference to MatineeActor option.
This will add the MatineeActor to the Event Graph of the Level Blueprint.
Minimize the Level Blueprint and through the Level Viewport or World Outliner, Left-Click on the TriggerBox to select it.
Open the Level Blueprint window and Right-Click in the Event Graph, then in the context menu under Add Event for TriggerBox and Collision, select the Add OnActorBeginOverlap option.
Right-Click in the Event Graph again, and repeat the previous step except select the Add OnActorEndOverlap option.
In the Event Graph find the MatineeActor node and Left-Click on and drag-off the output pin (Blue Circle) to bring up the context menu, then enter Play in the search field and select the Play option.
Drag-off the MatineeActor node again and in the context menu search field, enter Reverse and select the Reverse option.
Find the OnActorBeginOverlap node and drag-off the Execute output pin and connect it to the Play node's input pin.
Repeat the process above and connect the OnActorEndOverlap node's output pin to the Reverse node's input pin.
In the Level Blueprint's Toolbar menu, click the Compile Button.
The Blueprint is now complete and the TriggerBox is now hooked up to the Matinee Actor.
Minimize the Level Blueprint and click the Play Button in the main toolbar to play in the Editor.