Assigning a value to a Dictionary key changes other key values

Hi, Im, trying to work with a System.Collections.Generic.Dictionary as Dictionary. DataClass is my empty custom class which I extend from for different types of data,then add it to the main dictionary. It has worked up to a point, then I found when trying to assign a value to a key, then trying another after that, the last one assigns to all previous keys. Heres my code:

 public class MyProblem : Monobehaviour
 {
 
 
 public class Container : DataClass //exrention of DataClass
 {
   public object[] dataValues;
 }
 
 public string roomKey = "Data1"; //This is switched depending on the current scene
 Container roomCont = new Container();
 
 void Start()
 {
 roomCont.dataValues = new object[1];
 roomCont.dataValues[0] = Utils.Vector3ToFloat(transform.position);
 }
 
 IEnumerator runOnThisInstanceOnly()
 {
 roomCont.dataValues[0] = Utils.Vector3ToFloat(transform.position);
 yield return new WaitforSeconds(.2f);
 }
 
 
 void Update()
 {
 //Manager.dataBase is the Dictionary<string,DataClass> in another script. Adding

the roomKey index with the container value

 if (!Manager.dataBase.ContainsKey(roomKey))
             Manager.dataBase.Add(roomKey, roomCont);

         else
         {
             Manager.dataBase[roomKey] = roomCont;
             print("key = "+roomKey+" "+Utils.FloatToVector3(roomCont.dataValues[0]));
 //Printing the value I just added.
 
             if (Manager.dataBase.ContainsKey("Data2"))
             {
                 ItemDataCont da = (Container)Manager.dataBase["Data2"];
                print("key = "+"Data2"+ " "+ Utils.FloatToVector3(da.dataValues[0]));
             }
 //printing another value from another active script with a different keyname
 
             if (Manager.dataBase.ContainsKey("Data3"))
             {
                 ItemDataCont da = (Container)Manager.dataBase["Data3"];
                 print("key = " + "Data3" + " " + Utils.FloatToVector3(da.dataValues[0]));
             }
         }
 }
 //printing yet a third value from another script.`

The problem is, all three prints return the same value,even though I'm only setting the key and leaving the others untouched.