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Bluprint interactions

Hey Unreal dudes , Stay safe !
I have a bit nood question . I have a 2 bluperints one is simplly opening the door and the second is simple laser puzzle . What i want is when the player solves the laser puzzle i want to open the door . How i can interact between 2 blueprints ?

#BlueprintInteractions

You need to reference the Door Blueprint with the Laser Blueprint.
https://docs.unrealengine.com/en-US/Gameplay/HowTo/ReferenceAssets/Blueprints/#directblueprintcommunicationreferencing