diff --git a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZendoPublisherWidget.java b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZendoPublisherWidget.java
index 992a37c..3a0d900 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZendoPublisherWidget.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZendoPublisherWidget.java
@@ -153,7 +153,7 @@ public class CkanToZendoPublisherWidget {
 						}
 
 						@Override
-						public void onSuccess(String result) {
+						public void onSuccess(String doi) {
 							buttonPublish.setEnabled(false);
 							basicTabPanel.getElement().getStyle().setOpacity(1.0);
 							try {
@@ -163,6 +163,9 @@ public class CkanToZendoPublisherWidget {
 							}
 							String msg = "The item has been uploaded to Zenodo correctly";
 							
+							if(doi!=null)
+								msg+=" "+doi;
+							
 							Alert infoLabel = new Alert();
 							infoLabel.setClose(false);
 							infoLabel.setType(AlertType.INFO);
diff --git a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZenodoPublisherService.java b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZenodoPublisherService.java
index c720106..0226c3b 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZenodoPublisherService.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/client/CkanToZenodoPublisherService.java
@@ -10,14 +10,38 @@ import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
 
 /**
  * The client side stub for the RPC service.
+ *
+ * @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
+ * 
+ * Jan 28, 2020
  */
 @RemoteServiceRelativePath("ckantozenodo")
 public interface CkanToZenodoPublisherService extends RemoteService {
 
+  /**
+   * Convert to zenodo item.
+   *
+   * @param item the item
+   * @return the zenodo item
+   * @throws Exception the exception
+   */
   ZenodoItem convertToZenodoItem(CatalogueItem item) throws Exception;
 
+  /**
+   * Publish on zenodo.
+   *
+   * @param zenodoItem the zenodo item
+   * @return the DOI of published Zenodo Item
+   * @throws Exception the exception
+   */
   String publishOnZenodo(ZenodoItem zenodoItem) throws Exception;
 
+  /**
+   * Read fields descriptions.
+   *
+   * @return the map
+   * @throws Exception the exception
+   */
   Map<String, String> readFieldsDescriptions() throws Exception;
 
 }
diff --git a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/CkanToZenodoPublisherServiceImpl.java b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/CkanToZenodoPublisherServiceImpl.java
index b79c482..3c0e6f6 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/CkanToZenodoPublisherServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/CkanToZenodoPublisherServiceImpl.java
@@ -106,7 +106,7 @@ public class CkanToZenodoPublisherServiceImpl extends RemoteServiceServlet imple
 			//Finalize
 			LOG.debug("Calling publish on Zenodo for: "+zenodoDepositionPreview);
 			zenodoDepositionPreview = client.publish(zenodoDepositionPreview, item);
-			return zenodoDepositionPreview.toString();
+			return zenodoDepositionPreview.getDoi();
 			
 		}catch (TimeoutException e) {
 			String error = "I'm waiting too time for publishing on Zenodo the catalogue item: "+zenodoItem.getName()+". Check by yourself the result later";