Webservice Codeunit Array - Parameter

string[] strings = { "1", "2", "3" };
            
            XDocument doc = new XDocument();
            doc.Add(new XElement("root", strings.Select(x => new XElement("item", x))));

            string ReturnMessage = "";
            int i = api.ArrayTest(doc.ToString(),ref ReturnMessage);

            Console.WriteLine("No of lines: {0}, returned {1}",i, ReturnMessage);

PROCEDURE ArrayTest@1(OuterXml@1000 : Text;VAR ResultMessage@1007 : Text) : Integer;
    VAR
      DotNetArray@1005 : DotNet "'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Array";
      String@1006 : DotNet "'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.String";
      XmlDoc@1002 : DotNet "'System.Xml, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Xml.XmlDocument";
      XmlNodeList@1003 : DotNet "'System.Xml, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Xml.XmlNodeList";
      XmlNode@1001 : DotNet "'System.Xml, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Xml.XmlNode";
      NodeIndex@1004 : Integer;
    BEGIN
      XmlDoc := XmlDoc.XmlDocument;
      XmlDoc.LoadXml(OuterXml);
      XmlNodeList := XmlDoc.GetElementsByTagName('item');
      IF NOT ISNULL(XmlNodeList) THEN BEGIN
        DotNetArray := DotNetArray.CreateInstance(GETDOTNETTYPE(String),XmlNodeList.Count);
        FOR NodeIndex := 1 TO XmlNodeList.Count DO BEGIN
          XmlNode := XmlNodeList.ItemOf(NodeIndex - 1);
          DotNetArray.SetValue(XmlNode.InnerText,NodeIndex - 1);
          IF ResultMessage = '' THEN
            ResultMessage += XmlNode.InnerText
          ELSE
            ResultMessage += ',' + XmlNode.InnerText;
        END;
      END;

      EXIT(DotNetArray.Length);
    END;