UMG Widget Events in Networking ??

I have been using C++ for almost everything so far, but for the GUI I started working with widget blueprints, because it’s probably a lot more convenient. In code I know how to decorate functions with server/client/NetMulticast, but I don’t know what to do inside blueprints, especially because UMG widgets only exist on a client. So a conventional RPC doesn’t seem possible at all, since there is no counterpart on the server to call it on.

The question: How should I make a client’s button-click event (or similar) call a server function?

this example should help you