help to edit Text on the inspector

Unity Engine
1

Need Help how to add to inspector text edit, for this script RPG menssage.
to edit (“hello, the machine works?”); etc…

var showDialog : boolean = false;
var select : boolean = false;
function Update () {
}
function OnGUI()
{
    GUILayout.BeginArea(new Rect(10,10,200,200));
    if (showDialog  !select)
    {
       Time.timeScale = 0;       
 
    GUILayout.Label("hello, the machine works?");
 
    GUILayout.Label("This is working?");
    if (GUILayout.Button("Yes, it works"))
    {
      select = true;
      Time.timeScale = 1; 
      showDialog = false;    
    } 
    if (GUILayout.Button("No, dont work"))
    {      
      Time.timeScale = 1;
      showDialog = false;
    }    
 }
 if (showDialog  select)
 {
     Time.timeScale = 0; 
     GUILayout.Label("Tks for the help.");
     if (GUILayout.Button("ok"))
    {      
      Time.timeScale = 1; 
      showDialog = false;    
    }  
 }
 GUILayout.EndArea();
}
function OnTriggerEnter(hit : Collider)
{
    showDialog = true;  
}
function OnTriggerExit()
{
    //showDialog = false;  
}
2

Solution found. I was dummy:)