diff --git a/doc/xiFDR.bat b/doc/xiFDR.bat
new file mode 100755
index 0000000..1d07536
--- /dev/null
+++ b/doc/xiFDR.bat
@@ -0,0 +1,7 @@
+SET mypath=%~dp0
+java -jar %mypath%xiFDR-1.0.22-jar-with-dependencies.jar
+if NOT ["%errorlevel%"]==["0"] (
+    pause
+    exit /b %errorlevel%
+)
+exit
diff --git a/pom.xml b/pom.xml
index 6cb2385..9429800 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.rappsilberlab</groupId>
     <artifactId>xiFDR</artifactId>
-    <version>1.0.22</version>
+    <version>1.0.23</version>
     <packaging>jar</packaging>
     <dependencies>
         <dependency>
diff --git a/src/main/java/org/rappsilber/fdr/OfflineFDR.java b/src/main/java/org/rappsilber/fdr/OfflineFDR.java
index eb5ddd5..3e1f3f0 100644
--- a/src/main/java/org/rappsilber/fdr/OfflineFDR.java
+++ b/src/main/java/org/rappsilber/fdr/OfflineFDR.java
@@ -481,10 +481,10 @@ public PSM addMatch(String psmID, String pepSeq1, String pepSeq2, int peplen1, i
     }
     public PSM addMatch(String psmID, String pepSeq1, String pepSeq2, int peplen1, int peplen2, int site1, int site2, boolean isDecoy1, boolean isDecoy2, int charge, double score, String accession1, String description1, String accession2, String description2, int pepPosition1, int pepPosition2, double scoreRatio, boolean isSpecialCase, String crosslinker, String run, String scan) {
 
-        int pepid1 = m_pepIDs.toIntValue(pepSeq1);
-        int pepid2 = m_pepIDs.toIntValue(pepSeq2);
-        int protid1 = m_protIDs.toIntValue(accession1);
-        int protid2 = m_protIDs.toIntValue(accession2);
+        long pepid1 = m_pepIDs.toIntValue(pepSeq1);
+        long pepid2 = m_pepIDs.toIntValue(pepSeq2);
+        long protid1 = m_protIDs.toIntValue(accession1);
+        long protid2 = m_protIDs.toIntValue(accession2);
 
 
         //return addMatch(pepSeq2, pepSeq1, accession1, accession2, protid1, description2, isDecoy1, pepid1, pepPosition1, peplen1, protid2, isDecoy2, pepid2, pepPosition2, peplen2, psmID, site1, site2, charge, score, scoreRatio, isSpecialCase);
@@ -4248,17 +4248,17 @@ protected String getPeptideSequence(Peptide p) {
 
 
 
-    public PSM addMatch(String psmID, String run, String scan, Integer pepid1, Integer pepid2, String pepSeq1, String pepSeq2, int peplen1, int peplen2, int site1, int site2, boolean isDecoy1, boolean isDecoy2, int charge, double score, Integer protid1, String accession1, String description1, Integer protid2, String accession2, String description2, int pepPosition1, int pepPosition2, double scoreRatio, boolean isSpecialCase, String crosslinker) {
+    public PSM addMatch(String psmID, String run, String scan, Long pepid1, Long pepid2, String pepSeq1, String pepSeq2, int peplen1, int peplen2, int site1, int site2, boolean isDecoy1, boolean isDecoy2, int charge, double score, Long protid1, String accession1, String description1, Long protid2, String accession2, String description2, int pepPosition1, int pepPosition2, double scoreRatio, boolean isSpecialCase, String crosslinker) {
         return addMatch(psmID, run, scan, pepid1, pepid2, pepSeq1, pepSeq2, peplen1, peplen2,  site1, site2, isDecoy1, isDecoy2, charge, score, protid1, accession1, description1, protid2, accession2, description2, pepPosition1, pepPosition2, "", "", scoreRatio, isSpecialCase, crosslinker);
     }
     
-    public PSM addMatch(String psmID, String run, String scan, Integer pepid1, Integer pepid2, String pepSeq1, String pepSeq2, int peplen1, int peplen2, int site1, int site2, boolean isDecoy1, boolean isDecoy2, int charge, double score, Integer protid1, String accession1, String description1, Integer protid2, String accession2, String description2, int pepPosition1, int pepPosition2, String Protein1Sequence, String Protein2Sequence, double scoreRatio, boolean isSpecialCase, String crosslinker) {
+    public PSM addMatch(String psmID, String run, String scan, Long pepid1, Long pepid2, String pepSeq1, String pepSeq2, int peplen1, int peplen2, int site1, int site2, boolean isDecoy1, boolean isDecoy2, int charge, double score, Long protid1, String accession1, String description1, Long protid2, String accession2, String description2, int pepPosition1, int pepPosition2, String Protein1Sequence, String Protein2Sequence, double scoreRatio, boolean isSpecialCase, String crosslinker) {
         PSM ret = addMatch(psmID, pepid1, pepid2, pepSeq1, pepSeq2, peplen1, peplen2, site1, site2, isDecoy1, isDecoy2, charge, score, protid1, accession1, description1, protid2, accession2, description2, pepPosition1, pepPosition2, Protein1Sequence, Protein2Sequence, scoreRatio, isSpecialCase, crosslinker, run, scan);
         return ret;
         
     }
     
-    public PSM addMatch(String psmID, Integer pepid1, Integer pepid2, String pepSeq1, String pepSeq2, int peplen1, int peplen2, int site1, int site2, boolean isDecoy1, boolean isDecoy2, int charge, double score, Integer protid1, String accession1, String description1, Integer protid2, String accession2, String description2, int pepPosition1, int pepPosition2, String Protein1Sequence, String Protein2Sequence, double scoreRatio, boolean isSpecialCase, String crosslinker, String run, String Scan) {
+    public PSM addMatch(String psmID, Long pepid1, Long pepid2, String pepSeq1, String pepSeq2, int peplen1, int peplen2, int site1, int site2, boolean isDecoy1, boolean isDecoy2, int charge, double score, Long protid1, String accession1, String description1, Long protid2, String accession2, String description2, int pepPosition1, int pepPosition2, String Protein1Sequence, String Protein2Sequence, double scoreRatio, boolean isSpecialCase, String crosslinker, String run, String Scan) {
 //    public PSM addMatch(String pepSeq2, String pepSeq1, String accession1, String accession2, int protid1, String description2, boolean isDecoy1, int pepid1, int pepPosition1, int peplen1, int protid2, boolean isDecoy2, int pepid2, int pepPosition2, int peplen2, String psmID, int site1, int site2, int charge, double score, double scoreRatio, boolean isSpecialCase) {
         boolean linear = pepSeq2 == null || pepSeq2.isEmpty() || pepSeq1 == null || pepSeq1.isEmpty();
         boolean internal = (!linear) && (accession1.contentEquals(accession2) || ("REV_"+accession1).contentEquals(accession2) || accession1.contentEquals("REV_"+accession2));
diff --git a/src/main/java/org/rappsilber/fdr/entities/Peptide.java b/src/main/java/org/rappsilber/fdr/entities/Peptide.java
index c876dc2..7a9c84e 100644
--- a/src/main/java/org/rappsilber/fdr/entities/Peptide.java
+++ b/src/main/java/org/rappsilber/fdr/entities/Peptide.java
@@ -49,7 +49,7 @@ public class Peptide extends AbstractFDRElement<Peptide>  { //implements Compara
     private HashMap<Protein,IntArrayList> m_positions = new HashMap<Protein, IntArrayList>();
     //int posSize = 0;
     /** unique ID for this peptide */
-    private int id;
+    private long id;
     /** assigned FDR for this peptide */
     public double m_fdr = -1;
     /** mass of this peptide */
@@ -66,7 +66,7 @@ public class Peptide extends AbstractFDRElement<Peptide>  { //implements Compara
      * @param pos position in the protein
      * @param length the length of the peptide
      */
-    public Peptide(int id, String sequence, boolean isDecoy, Protein protein, int pos, int length) {
+    public Peptide(long id, String sequence, boolean isDecoy, Protein protein, int pos, int length) {
         this(id, sequence, isDecoy, new Protein[]{protein}, new int[]{pos}, length);
     }
     
@@ -82,7 +82,7 @@ public Peptide(int id, String sequence, boolean isDecoy, Protein protein, int po
      * @param pos positions within the proteins
      * @param length the length of the peptide
      */
-    public Peptide(int id, String sequence, boolean isDecoy, Protein[] protein, int[] pos, int length) {
+    public Peptide(long id, String sequence, boolean isDecoy, Protein[] protein, int[] pos, int length) {
         this.sequence = sequence;
         this.isDecoy = isDecoy;
         this.length = length;
@@ -512,14 +512,14 @@ public int getSites() {
     /**
      * @return the unique peptide id
      */
-    public int getId() {
+    public long getId() {
         return id;
     }
 
     /**
      * @param id the peptide-id
      */
-    public void setId(int id) {
+    public void setId(long id) {
         this.id = id;
     }
 
diff --git a/src/main/java/org/rappsilber/fdr/entities/Protein.java b/src/main/java/org/rappsilber/fdr/entities/Protein.java
index e58f5f8..a4ab3a3 100644
--- a/src/main/java/org/rappsilber/fdr/entities/Protein.java
+++ b/src/main/java/org/rappsilber/fdr/entities/Protein.java
@@ -26,7 +26,7 @@
  * @author lfischer
  */
 public class Protein extends AbstractFDRElement<Protein> {//implements Comparable<Protein> {
-    private int id;
+    private long id;
     private String accession;
     private String description;
     private String sequence="";
@@ -59,7 +59,7 @@ public class Protein extends AbstractFDRElement<Protein> {//implements Comparabl
      * @param internal
      * @param between 
      */
-    public Protein(int id, String accession, String description, boolean isDecoy, boolean linear, boolean internal, boolean between) {
+    public Protein(long id, String accession, String description, boolean isDecoy, boolean linear, boolean internal, boolean between) {
         this.id = id;
         // at some points we consider decoy and non decoy proteins the same. So 
         // both get the same accession to make my life easier
@@ -175,7 +175,7 @@ public int compareDecoyUnAware(Protein p) {
     /**
      * @return the id
      */
-    public int getId() {
+    public long getId() {
         return id;
     }