Widget not replicating in network game

I have a widget with health bars created inside my MainController BP and it works fine on the server, however on the clients the UMG bars are not showing the health properly. So the problem is clearly replication, I really don’t know how I am supposed to do this.

This is how I create the widget inside my MainController BP: http://i.imgur.com/qWmdAxS.png

This is the event bound to the widget frame inside my UMG UI Widget: http://i.imgur.com/qWmdAxS.png

This works perfectly server side, however the UMG health bars are empty on the clients. Any advice?

I have made a thread about my issue here:

Project files here: