Run on Server event doesn't fire for client

So I have button and when pressed it calls an event in another blueprint and it should just increase the level. This works fine for the server but if play the game from the clients side then it just doesn’t fire.

Is there anything I can do to change it?

http://puu.sh/nawj0/3128d3c03c.png

http://puu.sh/nawlM/6ca054c3eb.png

It seems that RPC only works when calling it from player controller or object owned by player controller by default.
ref: