// file: SaveTextFile.cs
using UnityEngine; 
using System.Collections;
using System.IO;

public class SaveTextFile : MonoBehaviour {
    public string fileName = "hello.txt";
    public string folderName = "Data";
    private string filePath = "(no file path yet)";
    private string message = "(trying to save data)";
    private FileReadWriteManager fileManager;

    void Start () {
        fileManager = new FileReadWriteManager();
        filePath = Application.dataPath + Path.DirectorySeparatorChar + fileName;

        string textData = "hello 
 and goodbye";
        fileManager.WriteTextFile( filePath, textData );

        message = "file should have been written now ...";
    }

   void OnGUI() 
   {
        GUILayout.Label("filepath = " + filePath);
        GUILayout.Label("message = " + message);
    }
}