Run Event on the server from the client

I’m really having a bad time trying to understand UE4’s Multiplayer system.
I want the client to be able to execute an event on the server. How can I do that?

This is what I’ve tried:

The message “Executed on server!” only appears when the “ClientSideEvent” is executed by the host, but not when it’s executed by a client

The “ClientSideEvent” should be a normal custom event. Then you can use “Switch Has Authority” node to check if you are the client or the server. For the client branch you call the server event that executes on the server.