Thanks for the reply.
I should indeed have had started with this information. I’m using the ThirdPersonTemplate where 2 players should be seeing the same cube changing on the map (so 1 cube for everyone). Video attached.
The final idea is to have players changing the same actors whenever they talk on the mic, but for testing purposes I’m just triggering the variable with the Z key. The effect that I want is the same as this tutorial (12:05): https://youtu.be/d3spCky0FIc?t=727
When I trigger the MicLoudness with the “Z” button on server-to-client side the changes looks ok, but from the client side it returns that the variable is being changed on server side (right?), but the cube is not changing on either client nor server.