Server Cant See Clients Attachment but replication works between client how to solve th

So When Server fires Event Item Use Function, its replicates to client . when client fires that function it replicates between clients.Server just undoing and doesnt see what client do. what can be problem here can someone help me ?

Execute the functionality on the client… equip/attach item. Then Replicate the functionality on the server… have server attach item and replicate to other clients.