How to make two actors communicate

Thank you very much for answering! But can you be a little bit more specific? I tried to create a boolean variable in the coconut actor and then create a function in the tree that casts to the coconut and sets the boolean to true. But not only it doesn’t work, I get an error warning sign after running the game and exiting from it.

Is there a way you can give an example ? I’m not fluent enough with UE4 to know exactly what I’m missing or what I’m doing wrong. Thanks for taking your time to answer tho!

edit: I was able to set up an event dispatcher in the tree and bind it via the blueprint level to the coconut through a custom event that then simulates the physics (don’t know if this is the best option to solve this issue) but then I ran into the problem that I can set the physics of only the mesh component of the coconut actor rather than the whole actor. My actor has an empty icon as the root and then 3 components (which are static mesh, sphere collision and a UI).