A question about direct references...

Lets say i have a class A which is instantiated as an object in a GameObject's monobehaviour. The class A is supposed to have a direct control over the position of the GameObject (the monobehaviour's gameObject.transform.position member). I tried to do something like this in the monobehaviour.

     using UnityEngine;
     using System.Collections;
     using Mynamespace; //contains the class A
     
     public class MyMonobehaviour : MonoBehaviour {
     
         public Vector3 myReference;
         public A sampleObject;

         void Start () {
             myReference = gameObject.transform.position;
             sampleObject = new A(ref myReference);
          }

      }

the class A is something like this:

 public class A {
 
        public Vector3 directReference;
 
         public A (ref Vector3 temp) {              
             directReference = temp;
         }
 
         public void Access() {
               Debug.Log("Current X position:  " + directReference .x);
         }
     }

the question is, why it doesnt provide direct access to the GameObject's position? if i try something like sampleObject.Access(); it wont display the current position of the gameobject, only the position it had at the moment of the A object instantiation.

Sorry for the long question but all of this driving me crazy, im a beginner, thanks.