Weird multiplayer problem

The players can only control their object if there is 1 player online, however when a second client connects the people control eachother instead of themselves.

I did do

 if(networkView.isMine){
 function Controls();
 }else{
 enabled = false; 
 }

on all my control scripts, however it doesnt work. A player is still controlling someone else and not themselves. I searched everytwhere for an anwser, I am using state synchronisation instead of rpc calls. Any help would be greatly appreciated!