RepNotify not fired if asked from client

Hello. I’m following networking tutorials on youtube. Everything clear, but when I’m trying to implement my behavior I can’t make it work. It seems that I missed some small puzzle. So, I have an Actor blueprint that just hold static mesh. I want to click on it and change material color. But I want that change to occur on server.

6763-1.png

Here OnColorChange event set as Run on Server and Reliable. As you can see it changes Color variable and should notify about that change. It works on server, but never on client. Why?