CustomEditor Inheritance Issue

Hi, I have a class that derives from UnityEngine.UI.Button
And my CustomEditor class derives from UnityEditor.UI.ButtonEditor.

My problem is that when I call ApplyModifiedProperties() all my custom variables are saved while the standard button variables are lost.
I’ve noticed that if I DON’T call ApplyModifiedProperties() all standard variables are saved while mine are lost.

[CustomEditor(typeof(CustomButton), true)]
public class CustomButton_Editor : ButtonEditor
{
    private SerializedObject m_Object;
    private SerializedProperty m_Property;
        
    protected override void OnEnable()
    {
        m_Object = new SerializedObject(target);
        base.OnEnable();
    }

    public override void OnInspectorGUI()
    {
        ...
        ...
        m_Property = m_Object.FindProperty("_scaleTo");
        EditorGUILayout.PropertyField(m_Property, new GUIContent(m_Property.displayName, m_Property.tooltip));

        base.OnInspectorGUI();

        m_Property = m_Object.FindProperty("_triggerDirectly");
        EditorGUILayout.PropertyField(m_Property, new GUIContent(m_Property.displayName, m_Property.tooltip));

        if (GUI.changed)
        {
            m_Object.ApplyModifiedProperties();
        }
    }
}

I’m using Unity version: 5.3.3p1

So does anyone have any idea how to solve this?
Thank you.

I found the solution, I had to add m_Object.Update(); after m_Object.ApplyModifiedProperties(); (line 28)