diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressBarUpdater.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressBarUpdater.java
index 2f09216..f1f42a1 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressBarUpdater.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressBarUpdater.java
@@ -70,5 +70,12 @@ public class ColumnFilterProgressBarUpdater implements ColumnFilterProgressListe
 		progressBar.updateText("Validations failed");
 		
 	}
+	
+	@Override
+	public void operationGeneratingView() {
+		Log.info("Generating View...");
+		progressBar.updateText("Generating View...");
+		
+	}
 
 }
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressDialog.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressDialog.java
index eaa5326..36b9606 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressDialog.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressDialog.java
@@ -137,4 +137,10 @@ public class ColumnFilterProgressDialog extends Window implements ColumnFilterPr
 			this.trId=trId;
 			why=ChangeTableWhy.TABLECURATION;
 		}
+
+		@Override
+		public void operationGeneratingView() {
+			// TODO Auto-generated method stub
+			
+		}
 }
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressListener.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressListener.java
index d692a30..9390f3b 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressListener.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressListener.java
@@ -49,5 +49,9 @@ public interface ColumnFilterProgressListener {
 	 */
 	public void operationStopped(TRId trId, String reason, String details);
 	
+	/**
+	 *  Called when the operation is generating the view
+	 */
+	public void operationGeneratingView();
 
 }
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressUpdater.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressUpdater.java
index d1c609e..1c41ef3 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressUpdater.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/progress/ColumnFilterProgressUpdater.java
@@ -61,6 +61,10 @@ public class ColumnFilterProgressUpdater extends Timer {
 						case VALIDATING_RULES:
 							fireOperationUpdate(result.getProgress());
 							break;	
+						case GENERATING_VIEW:
+							Log.info("Generating View...");
+							fireOperationGeneratingView();
+							break;		
 						case STOPPED:
 							cancel();
 							stopMessage(result);
@@ -135,6 +139,11 @@ public class ColumnFilterProgressUpdater extends Timer {
 		for (ColumnFilterProgressListener listener : listeners)
 			listener.operationInitializing();
 	}
+	
+	protected void fireOperationGeneratingView() {
+		for (ColumnFilterProgressListener listener : listeners)
+			listener.operationGeneratingView();
+	}
 
 	protected void fireOperationUpdate(float elaborated) {
 		for (ColumnFilterProgressListener listener : listeners)
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/server/ExpressionServiceImpl.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/server/ExpressionServiceImpl.java
index 27057a3..8145e50 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/server/ExpressionServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/server/ExpressionServiceImpl.java
@@ -175,6 +175,8 @@ public class ExpressionServiceImpl extends RemoteServiceServlet implements
 					case VALIDATING_RULES:
 						columnFilterMonitor.setProgress(task.getProgress());
 						break;
+					case GENERATING_VIEW:
+						break;	
 					case ABORTED:
 						break;
 					case STOPPED: