Problems with interact script

Hello I'm working with an interact script that allows the player to interact with other gameobjects(players,doors,etc...).This is what I've done till now.I would also like to include an interaction with a an gameobject in order to make the simulation stop and finish.Thank you very much.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class InteractObject
6. {
7.     private string action;
8.     public InteractObject(string act)
9.     {
10.         action = act;
11.     }
12.     public void Interact()
13.     {
14.         if (action == "exemple")
15.         {
16.             Debug.Log("Has acabado la simulación");
17.         }
18.     }
19. }