diff --git a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXTableDetailCard.java b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXTableDetailCard.java
index b424ba3..e8e543e 100644
--- a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXTableDetailCard.java
+++ b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXTableDetailCard.java
@@ -46,12 +46,9 @@ public class SDMXTableDetailCard extends WizardCard {
 	protected TextField agencyName;
 	protected TextField registryBaseUrl;
 	protected TextField version;
-	
-	
+
 	protected TextButton checkButton;
 
-
-
 	public SDMXTableDetailCard(final SDMXExportSession exportSession) {
 		super("SDMX Table Detail", "");
 
@@ -72,7 +69,7 @@ public class SDMXTableDetailCard extends WizardCard {
 		fieldSet.setHeadingText("Information");
 		fieldSet.setCollapsible(false);
 		form.add(fieldSet);
-		
+
 		fieldSet.add(p);
 
 		id = new TextField();
@@ -81,7 +78,6 @@ public class SDMXTableDetailCard extends WizardCard {
 		id.setValue(exportSession.getTabResource().getName());
 		p.add(new FieldLabel(id, "Id"), new VerticalLayoutData(1, -1));
 
-
 		agencyName = new TextField();
 		agencyName.setVisible(true);
 		agencyName.setEmptyText("Enter Agency...");
@@ -92,34 +88,33 @@ public class SDMXTableDetailCard extends WizardCard {
 		registryBaseUrl = new TextField();
 		registryBaseUrl.setVisible(false);
 		registryBaseUrl.setEmptyText("Enter Registry URL...");
-		String urlRegistry=((SDMXRegistrySource)exportSession.getSource()).getUrl();
-		if(urlRegistry==null||urlRegistry.isEmpty()){
+		String urlRegistry = ((SDMXRegistrySource) exportSession.getSource())
+				.getUrl();
+		if (urlRegistry == null || urlRegistry.isEmpty()) {
 			registryBaseUrl.setValue(null);
 		} else {
 			registryBaseUrl.setValue(urlRegistry);
 		}
-		FieldLabel registryBaseUrlLabel = new FieldLabel(registryBaseUrl, "Registry URL");
+		FieldLabel registryBaseUrlLabel = new FieldLabel(registryBaseUrl,
+				"Registry URL");
 		registryBaseUrlLabel.setVisible(false);
 		p.add(registryBaseUrlLabel, new VerticalLayoutData(1, -1));
-		
+
 		version = new TextField();
 		version.setAllowBlank(false);
 		version.setEmptyText("Enter Version...");
 		version.setValue("");
 		p.add(new FieldLabel(version, "Version"), new VerticalLayoutData(1, -1));
 
-		
 		tableDetailPanel.add(form);
 		setContent(tableDetailPanel);
 
 	}
 
-
 	@Override
 	public void setup() {
 		Command sayNextCard = new Command() {
 
-		
 			public void execute() {
 				checkData();
 			}
@@ -158,8 +153,7 @@ public class SDMXTableDetailCard extends WizardCard {
 			}
 		};
 
-		if (id.getValue() == null || id.getValue().isEmpty()
-				|| !id.isValid() 
+		if (id.getValue() == null || id.getValue().isEmpty() || !id.isValid()
 				|| version.getValue() == null || version.getValue().isEmpty()
 				|| !version.isValid() || agencyName.getValue() == null
 				|| agencyName.getValue().isEmpty() || !agencyName.isValid()) {
@@ -168,11 +162,17 @@ public class SDMXTableDetailCard extends WizardCard {
 			d.addHideHandler(hideHandler);
 			d.show();
 		} else {
-			id.setReadOnly(true);
-			registryBaseUrl.setReadOnly(true);
-			version.setReadOnly(true);
-			agencyName.setReadOnly(true);
-			goNext();
+			if (!version.getValue().matches("[0-9]+\\.[0-9]+")) {
+				d = new AlertMessageBox("Attention!", "Version must match the regular expression [0-9]+\\.[0-9]+");
+				d.addHideHandler(hideHandler);
+				d.show();
+			} else {
+				id.setReadOnly(true);
+				registryBaseUrl.setReadOnly(true);
+				version.setReadOnly(true);
+				agencyName.setReadOnly(true);
+				goNext();
+			}
 		}
 
 	}