How can I change a variables in and between spawned Objects

First of all I have a game where you have 2 players empty objects “1 for client and one for the the other one”
both players select their teams then they have to click on number 1 to spawn an Object “Humvee” the problem is I can’t control the health of the spawned object “Humvee” when it attacks the other game object in fact I can’t make it attack the other objects because I don’t know a way to synchronize the operation between the spawned objects , Of course I used “local player authority” on the spawned objects scripts but to no avail I can’t use

this is a picture of my game I’m really new to networking so thanks in advance for any help

Hey thanks for helping and luck I have already found the answer and will share it in case someone has the same problem but IDK if this is a good solution or not , the problem is "When I spawn the objects from "Player object script " the new spawned objects have script too , the real problem in this this is when any value in these new objects got changed no one will know about it "Because I cant use syncvars and commands outside player object “so I changed from giving local player authority to (Is server) but without using any RPCS this time and it worked !” thanks again