Scripts working together

Hi there,

Im new to Unity and C# and im playing around with a small game tutorial and im on the point where i want to build in a small mission, click on a computer and then walk to a collider with a trigger in it.

Now i have to make scripts working with variables from other scripts and there i fail

i can somehow get to work that a dialogue is popping up from a script but somehow i cant figure out how to set a bool to true in another script, kinda strange

And on a simular note, i work with public variables and drag&drop the objects in the unity into the slot where it should be, i red about a FIND and GETCOMPONENT method but i dont know which one i should use... what is the difference between those 2 methods?

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Computer : MonoBehaviour {
5.  
6.     public Dialogue _dialoguescript;
7.     string[] DialogueStrings;
8.  
9.     public GameObject TextBox ;
10.     public GameObject HintergrundTextBox;
11.  
12.     public bool Mission1TriggerBox;  
13.  
14.     public bool _FirstMissionEnabled = false;
15.  
16.  
17.     void Start()
18.     {
19.         // panel = GameObject.Find("Dialogue Image");
20.         TextBox.SetActive(false);
21.         HintergrundTextBox.SetActive(false);
22.  
23.     }
24.  
25.     void OnTriggerStay2D(Collider2D other){
26.         if (Input.GetKeyDown ("t"))
27.         {
28.             //print("Computer was activated");
29.             TextBox.SetActive(true);
30.             HintergrundTextBox.SetActive(true);
31.  
32.             DialogueStrings = new string[3];
33.             DialogueStrings[0] = "Hi there";
34.             DialogueStrings[1] = "Lets go to the first Mission!";
35.             DialogueStrings[2] = "Go to the Gate!";
36.             _dialoguescript.StartCoroutine(_dialoguescript.StartDialogue(DialogueStrings));
37.  
38.             Mission1TriggerBox._isEnabled = true;    <-------------- ERROR
39.  
40.          
41.             //panel.SetActive(false);
42.         }
43.     }
44.  
45.     void OnTriggerExit2D(Collider2D other) {
46.         Debug.Log ("Und weg..");
47.         TextBox.SetActive(false);
48.         HintergrundTextBox.SetActive(false);
49.     }
50. }
51.  

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Misison1 : MonoBehaviour {
5.  
6.  
7.     static bool _M1Enabled;
8.  
9.     public Dialogue _dialoguescript;
10.     string[] DialogueStrings;
11.  
12.  
13.     void OnTriggerEnter2D(Collider2D other)
14.     {
15.         if (_isEnabled == true)
16.         {
17.  
18.             Debug.Log("YeeY");   <--------------- THIS SHOULD HAPPEN BUT IT DOESNT :(
19.  
20.         }
21.     }
22. }
23.  

The green text never gets displayed.


Thanks for any Help!