OnRep not triggering at client?

I have variables name ServerStartProcess and ServerFinishProcess with RepNotify where I would like to use it to trigger when server started and finished processing an event. Below is how my blueprint looks like

Left mouse button pressed -> call processing event reliable replicated to server

event processing executes on server -> set w/notify ServerStartProcess true -> bla bla bla -> set w/notify ServerFinishProcess true

OnRep_ServerFinishProcess only gets trigger at the server game instance but never gets called at client game instance. Why?

I’m still struggling to get OnRep_ServerFinishProcess trigger at client game instance. Anyone please?