Reference StreamWriter-Created Variable [C#]

Unity Engine
1 
using UnityEngine;
using UnityEngine.SceneManagement;
using System.IO;

public class SceneTeleport : MonoBehaviour
{
    [SerializeField]

    private ProjectScenes openScene;

    public void OnInteraction()
    {
        SceneManager.LoadScene(openScene.ToString());
    }
}

public class SceneEnumGenerator : UnityEditor.AssetModificationProcessor
{
    private static readonly string stringName = "ProjectScenes";

    static string[] OnWillSaveAssets(string[] paths)
    {
        RewriteSceneEnum();
        return paths;
    }

    private static void RewriteSceneEnum()
    {
        string path = "Assets/" + stringName + ".cs";

        using(StreamWriter streamWriter = new StreamWriter(path))
        {
            streamWriter.WriteLine("public enum " + stringName);
            streamWriter.WriteLine("{");

            System.Int32 num = UnityEditor.EditorBuildSettings.scenes.Length;

            for(int i = 0; i < num; i++)
            {
                string name = GetSceneNameFromPath(UnityEditor.EditorBuildSettings.scenes[i].path);

                if(i == num - 1)
                {
                    streamWriter.WriteLine(name);
                }
                else
                {
                    streamWriter.WriteLine(name + ", ");
                }
            }

            streamWriter.WriteLine("}");
        }

        UnityEditor.AssetDatabase.Refresh();
    }

    private static string GetSceneNameFromPath(string path)
    {
        string sceneName = path.Substring(0, path.Length - 6);
        return sceneName.Substring(sceneName.LastIndexOf('/') + 1);
    }
}

My error is on line nine, where the variable doesn’t recognize the ‘ProjectScenes’, which is created via. StreamWriter below. There are two problems, and I don’t know how to fix them.

1: The script can’t reference ProjectScenes if the variable is created below, and I can’t move it if I wish to keep the script working.
2: The script hasn’t ran yet, therefore meaning that the variable is currently nonexistent.

Any suggestions will help. Thanks!

2

What does ProjectScenes suppose to be? A custom class?