Custom editor UnityEvents in List

Hi, I need to display unity events in the inspector but I don't know how.

Here is my code

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEditor;
 using UnityEngine.Events;
 
 class TextWindow : EditorWindow
 {
     Dialog_Object window_dialog_object;
     Vector2 scrollposition = Vector2.zero;
 
 
     public void EditText(Dialog_Object _object)
     {
         window_dialog_object = _object;
     }
 
     private void OnGUI()
     {
         if(window_dialog_object != null)
         {
             scrollposition = GUILayout.BeginScrollView(scrollposition, false, true, GUILayout.Width(900),GUILayout.Height(600));
             for (int i = 0; i < window_dialog_object.dialogs.Count; i++)
             {
                 GUILayout.BeginVertical("HelpBox");
                 GUILayout.Label("Text " + (i + 1) + ": ");
                 window_dialog_object.dialogs[i].Text = GUILayout.TextField(window_dialog_object.dialogs[i].Text);
                 GUILayout.EndVertical();
             }
             GUILayout.EndScrollView();
         }
     }
 }
 
 [CustomEditor(typeof(Dialog_Object))]
 public class DialogEditor : Editor
 {
     TextWindow[] window;
     Dialog_Object _object;
 
     public override void OnInspectorGUI()
     {
         serializedObject.Update();
         _object = target as Dialog_Object;
 
         SerializedProperty property = serializedObject.FindProperty("dialogs");
 
         EditorGUILayout.BeginHorizontal();
         EditorGUILayout.LabelField("Lenght: ");
         property.arraySize = EditorGUILayout.IntField(property.arraySize);
         EditorGUILayout.EndHorizontal();
 
 
         for (int i = 0; i < _object.dialogs.Count; i++)
         {
             EditorGUILayout.BeginVertical("HelpBox");
 
             EditorGUILayout.BeginHorizontal();
             EditorGUILayout.LabelField("Name of Character: ");
             _object.dialogs[i].Name = EditorGUILayout.TextField(_object.dialogs[i].Name);
             EditorGUILayout.EndHorizontal();
 
             _object.dialogs[i].HaveJob = GUILayout.Toggle(_object.dialogs[i].HaveJob, "Have Job");
 
             if (_object.dialogs[i].HaveJob)
             {
                 EditorGUILayout.BeginHorizontal();
                 EditorGUILayout.LabelField("Description of profession: ");
                 _object.dialogs[i].job = EditorGUILayout.TextField(_object.dialogs[i].job);
                 EditorGUILayout.EndHorizontal();
             }
 
             GUILayout.Space(10);
             if (GUILayout.Button("Edit Text"))
             {
                 window = new TextWindow[property.arraySize];
                 window[i] = (TextWindow)EditorWindow.GetWindow(typeof(TextWindow));
                 window[i].EditText(_object);
                 window[i].Show();
             }
 
             SerializedProperty events = serializedObject.FindProperty("dialogs").FindPropertyRelative("events");
 
             EditorGUILayout.PropertyField(events);
 
             if (GUILayout.Button("X", GUILayout.MaxWidth(20), GUILayout.MaxHeight(20)))
             {
                 _object.dialogs.Remove(_object.dialogs[i]);
             }
 
             EditorGUILayout.EndVertical();
         }
 
         if (GUILayout.Button("+"))
         {
             _object.dialogs.Add(null);
         }
 
         if(GUI.changed)
         {
             serializedObject.ApplyModifiedProperties();
         }
     }
 }