public variables , prefab and instances

Unity Engine
1

I have a script named “Gun.cs”:

public class Gun: MonoBehaviour {
    
    public bool isMachineGun;
    
    public float damagePower;

    // other logic here

}

now I assign this script to a prefab, than drag the pfreab to the scene, rename the game object to
“G1”, repeat that , so finally I get some game objects with name “G1” “G2” …
And I set the variable “isMachineGun” of G1 to true , G2 false , …

The problem is : every time I apply changes to prefab by click the “Apply” button , all game objects
will have the same setting , all the ‘isMachineGun’ will have the same value .

How can I only apply some of setting to prefab?
In other words, How can I only apply ‘damagePower’ setting to prefab everytime , but not ‘isMachineGun’ ?

Thanks.

2

My question is:
Why are you trying to apply changes to your prefab? I don’t understand…The basic prefab using is to create a standard object, for your whole project, with basics values. Then, each time you use it on your scene, you can customize it by changing values. And that’s all, Apply button only need to be pressed if you make with the object on the scene rather than on your prefab directly (usefull when you want to see changes into the scene, scaling for example).