Toggle a bool on only one object at a time by tapping an object.

The goal here is to be able to tap objects and make them transparent, and when they are tapped again, make them solid again.

I have a bunch of gameObjects that I need to toggle a boolean on individually. The bool state changes the current alpha of the material on an object. This function worked great when it was on just one gameObject, but when I applied the scripts to the other objects, the function still changes the bool on all objects at once. I separated the script that had the bool so that it lived on the object.

I am using this script to make a gameObject into a button, then the function below to manipulate the bool in the ObjAlphaBool script.

 public class MakeObjectButton : MonoBehaviour
 {
     public UnityEvent action;
 
 
     void Update()
         {
             if (Input.GetMouseButtonDown(0))
             {
                 var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
                 RaycastHit hit;
                 if (Physics.Raycast(ray, out hit, Mathf.Infinity))
                 {
                     GameObject obj = hit.collider.gameObject;
                     obj.GetComponent<MakeObjectButton>().action.Invoke();
                 }
             }
         }
     
         public void ToggleAlpha()
         {
     
             gameObject.GetComponent<ObjAlphaBool>().ToggleAlphaState();
         }

This is the script that should be changing just the current gameObject. But when I use the button on an object, the console prints out the debug for all objects and for both states.

 public class ObjAlphaBool : MonoBehaviour
 {
 
     public bool AlphaValueBool = true;
 
 
     public void ToggleAlphaState()
     {
         AlphaValueBool = !AlphaValueBool;
         
         if (AlphaValueBool == false)
         {
             newAlpha(gameObject.GetComponent<Renderer>().material, 0.3f);
             Debug.Log("Alpha is 0.3");
         }
         else
         {
             newAlpha(gameObject.GetComponent<Renderer>().material, 1f);
             Debug.Log("Alpha is 1");
         }
     }
 
     void newAlpha(Material mat, float alphaVal)
     {
 
         Color oldColor = mat.color;
         Color newColor = new Color(oldColor.r, oldColor.g, oldColor.b, alphaVal);
         mat.SetColor("_Color", newColor);
 
     }
 }