Event dispatcher client problem

Hello everyone!
an actor no owning on the client side must send a message to the same actor server side. I can not put a custom event “run on server” or “multicast” since the customer is not the owner. So I did this:
-On the client side, an event dispatcher is called from the playercontroller.
-on the playercontroller client, when the message is received from the actor, a custom event “run on server” sends a message to the server.
-on the playercontroller server side, an event dispatcher sends a message to the actor that he has received the message of the custom event “run on server”

All this part works well. But the message between playercontroller and actor does not work. Do you know where the problem may come from? I look for several days …

for information: for the server or in alone mode, everything works well.