Question by skildfrix · Aug 12, 2017 at 01:53 PM · c#ui script error values

How to get the value of the String Variable from another script?

I'm tying to display the map name on the Text UI controller I have. I programmed it to display the name when I click the button.

I have LevelDetails that stores the name of the level and I made it public to I can modify to the other game objects as well:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class objDetails : MonoBehaviour {
     public string displayName;
 }

And I have uiIDCatcher script that has the operation to display the name to the Text UI component:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;
 
 public class uiIDCatcher : MonoBehaviour {
 
     //Script Referrence
     private objDetails details;
 
     //info section
     public string MapName;
 
     //UIElements
     public Text dispMapName;
 
     //IDs
     public string mapID;
     public string shipID;
     
 
     private void Awake()
     {
         //script components
         details = GetComponent<objDetails>();
 
         //Initialize empty IDs upon awake
         mapID = string.Empty;
         shipID = string.Empty;
     }
 
 
 
     /*
         When a map is clicked, return the value to the catcher
     */
     public void onMapClick()
     {
         mapID = string.Empty;
 
         //Get map ID based  on GameObject name
         mapID = EventSystem.current.currentSelectedGameObject.name;
         MapName = details.displayName;
 
         dispMapName.text = MapName;
 
         //print(mapID);
     }

When I try to press the button, it returns this error and does not do the operation:

alt text