diff --git a/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/Publication.java b/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/Publication.java
index 57e6058b8..0b8788b4d 100644
--- a/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/Publication.java
+++ b/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/Publication.java
@@ -260,7 +260,7 @@ public class Publication extends ContentPage {
         return getPublicationBundle().getSeries();
     }
 
-    public void addSeries(final Series series, final Integer volumeOfSeries) {
+    public void addSeries(final Series series, final String volumeOfSeries) {
         //Assert.exists(series, Series.class);
 
         //add(SERIES, series);
diff --git a/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/PublicationBundle.java b/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/PublicationBundle.java
index cb6f98b4d..41c514092 100644
--- a/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/PublicationBundle.java
+++ b/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/PublicationBundle.java
@@ -357,7 +357,7 @@ public class PublicationBundle extends ContentBundle {
         return new SeriesCollection((DataCollection) get(SERIES));
     }
     
-    public void addSeries(final Series series, final Integer volumeOfSeries) {
+    public void addSeries(final Series series, final String volumeOfSeries) {
         Assert.exists(series, Series.class);
         
         final DataObject link = add(SERIES, series.getSeriesBundle());
diff --git a/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/ui/PublicationSeriesAddForm.java b/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/ui/PublicationSeriesAddForm.java
index d3ed9d169..da394e13e 100644
--- a/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/ui/PublicationSeriesAddForm.java
+++ b/ccm-sci-publications/src/com/arsdigita/cms/contenttypes/ui/PublicationSeriesAddForm.java
@@ -26,7 +26,7 @@ import com.arsdigita.bebop.event.FormInitListener;
 import com.arsdigita.bebop.event.FormProcessListener;
 import com.arsdigita.bebop.event.FormSectionEvent;
 import com.arsdigita.bebop.form.TextField;
-import com.arsdigita.bebop.parameters.IntegerParameter;
+import com.arsdigita.bebop.parameters.StringParameter;
 import com.arsdigita.bebop.parameters.ParameterModel;
 import com.arsdigita.cms.ContentType;
 import com.arsdigita.cms.Folder;
@@ -84,7 +84,7 @@ public class PublicationSeriesAddForm
 
         add(new Label((String) PublicationGlobalizationUtil.globalize(
                 "publications.ui.series.volume_of_series").localize()));
-        ParameterModel volumeOfSeriesParam = new IntegerParameter(
+        ParameterModel volumeOfSeriesParam = new StringParameter(
                 VolumeInSeriesCollection.VOLUME_OF_SERIES);
         volumeOfSeries = new TextField(volumeOfSeriesParam);
         add(volumeOfSeries);
@@ -111,7 +111,7 @@ public class PublicationSeriesAddForm
             series = (Series) series.getContentBundle().getInstance(publication.
                     getLanguage());
 
-            publication.addSeries(series, (Integer) data.get(VolumeInSeriesCollection.VOLUME_OF_SERIES));
+            publication.addSeries(series, (String) data.get(VolumeInSeriesCollection.VOLUME_OF_SERIES));
             m_itemSearch.publishCreatedItem(data, series);
         }
 
diff --git a/ccm-sci-publications/src/com/arsdigita/cms/scipublications/importer/util/ImporterUtil.java b/ccm-sci-publications/src/com/arsdigita/cms/scipublications/importer/util/ImporterUtil.java
index 5e0cd9122..8a7d52b33 100644
--- a/ccm-sci-publications/src/com/arsdigita/cms/scipublications/importer/util/ImporterUtil.java
+++ b/ccm-sci-publications/src/com/arsdigita/cms/scipublications/importer/util/ImporterUtil.java
@@ -615,7 +615,7 @@ public class ImporterUtil {
                 bundle.setContentSection(folder.getContentSection());
                 bundle.save();
 
-                publication.addSeries(series, 1);
+                publication.addSeries(series, "1");
 
                 if (publish) {
                     publishItem(series);
@@ -633,7 +633,7 @@ public class ImporterUtil {
             if (!pretend) {
                 collection.next();
                 final Series series = new Series(collection.getDataObject());
-                publication.addSeries(series, 1);
+                publication.addSeries(series, "1");
             }
             report.setCreated(false);
         }