XML Retrieval with XElement

public static bool UpdateDuplicateXml(string xmlFilePath)
        {
            try
            {
                XDocument xml = XDocument.Load(xmlFilePath);
                var dubs = xml.Descendants().Where(x => x.Name == "author");
                var xElements = dubs as XElement[] ?? dubs.ToArray();
                if (xElements.Count() > 1)
                {
                    for (int index = 0; index < xElements.Length; index++)
                    {

                        if (index == 0)
                        {
                            XElement xElement = xElements[index];
                            xElement.Name = xElement.Name;
                        }
                        else
                        {
                            XElement xElement = xElements[index];
                            int newIndex = index + 1;
                            xElement.Name = xElement.Name + newIndex.ToString();
                        }

                    }
                }
                xml.Save(xmlFilePath);
                return true;
            }
            catch(Exception exception)
            {
                return false;
            }
        }