quick fix

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml;

namespace StructureWriter
{
    sealed class XMLConverter
    {
        private ArrayList Structure;
        private readonly string Header;
        private readonly int ObjectCounter;
        private readonly int LoopCounter;

        internal XMLConverter(int ObjectCounter, int LoopCounter, string Header, ArrayList Structure)
        {
            this.ObjectCounter = ObjectCounter;
            this.LoopCounter = LoopCounter;
            this.Structure = Structure;

            this.Header = Header;
            CreateXMLFile();
        }

        internal void CreateXMLFile()
        {
            using (XmlWriter writer = XmlWriter.Create("" + Header + "_structure_" + Program.Release + ".xml"))
            {
                writer.WriteStartDocument();
                writer.WriteStartElement("Facts");

                writer.WriteStartElement("Fact");
                writer.WriteAttributeString("id", "release");
                writer.WriteString(Program.Release);
                writer.WriteEndElement();

                writer.WriteStartElement("Fact");
                writer.WriteAttributeString("id", "packet header");
                writer.WriteString(Header);
                writer.WriteEndElement();

                foreach (string Struct in Structure)
                {
                    writer.WriteStartElement("Structure");
                    writer.WriteAttributeString("type", !Struct.Contains("OBJ") && !Struct.Contains("loop") ? ConvertCharToString(Struct) : Struct);
                    writer.WriteString(!Struct.Contains("OBJ") && !Struct.Contains("loop") ? ConvertCharToString(Struct) : Struct);
                    writer.WriteEndElement();
                }

                writer.WriteEndElement();

                writer.WriteEndDocument();
            }
        }

        internal string ConvertCharToString(string nChar)
        {
            if (nChar == "S")
                return "String";
            else if (nChar == "I")
                return "Integer";
            else if (nChar == "B")
                return "Boolean";
            else if (nChar == "F")
                return "Float";
            else if (nChar == "SH")
                return "Short";
            else if (nChar == "BYTE")
                return "Byte";
            else
                return "Undefined";
        }
    }
}