diff --git a/src/main/java/org/gcube/portlets/user/td/tablewidget/client/normalize/DenormalizePanel.java b/src/main/java/org/gcube/portlets/user/td/tablewidget/client/normalize/DenormalizePanel.java
index 968133d..0c80366 100644
--- a/src/main/java/org/gcube/portlets/user/td/tablewidget/client/normalize/DenormalizePanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/tablewidget/client/normalize/DenormalizePanel.java
@@ -17,6 +17,7 @@ import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableReque
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableWhy;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
+import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnDataType;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.google.gwt.core.client.GWT;
@@ -299,8 +300,21 @@ public class DenormalizePanel extends FramedPanel implements
 						Log.trace("loaded " + result.size() + " ColumnData");
 						columnsRetrieved=result;
 						resetComboStatus();
+						ArrayList<ColumnData> columnsIntegerNumeric=new ArrayList<ColumnData>();
+						for(ColumnData c: result){
+							if(c.getDataTypeName().compareTo(ColumnDataType.Numeric.toString())==0 ||
+									c.getDataTypeName().compareTo(ColumnDataType.Integer.toString())==0) {
+								columnsIntegerNumeric.add(c);
+							}
+						}
+						if(columnsIntegerNumeric.size()<1){
+							UtilsGXT3.alert("Attention",
+									"No Column with data type Integer or Numeric");
+							return;
+						}
+						
 						callback.onSuccess(new ListLoadResultBean<ColumnData>(
-								result));
+								columnsIntegerNumeric));
 
 					}
 
diff --git a/templates/changelog.xml b/templates/changelog.xml
index 9467ac4..ee91299 100644
--- a/templates/changelog.xml
+++ b/templates/changelog.xml
@@ -5,6 +5,7 @@
 		<Change>Added Resume to Validations</Change>
 		<Change>Added Security Exception</Change>
 		<Change>Added Normalize</Change>
+		<Change>Added Denormalize</Change>
 	</Changeset>
 	<Changeset component="${groupId}.${artifactId}.1-1-0"
 		date="2014-06-05">