Network replicate hidden objects with a trigger

Hi there.

I have a question with regards to hiding a pretty big mesh and only want it shown when the player goes to a window otherwise it is hidden so i have added a trigger and scaled this so as the player walks up to the window the mesh appears outside this works ok.

My problem is if I have two players and Player 1 is in the Trigger and Player 2 is out of the trigger it shows the mesh all the time how do i get this work so if a player is outside it shows it for that player but not for the player inside the trigger still

any help would be great thank you.