Replicate actor through user action

Hi,

I have a problem getting something to spawn correctly on all machines through blueprint replication.
Here is a screenshot of my blueprint setup.

This network is done inside the default third person blueprint alongside the movement controls.

What I want to do is capture an input event on the client and then spawn a bomb prefab on the server, that should replicate to all connected clients.

At the moment this only works, when I trigger the input on the server.

Thank you very much for your help.

Cheers