diff --git a/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java b/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java
index d63f1f0..b54607b 100644
--- a/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java
+++ b/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java
@@ -135,12 +135,12 @@ public class CSVOperationInProgressCard extends WizardCard implements
 
 	
 	@Override
-	public void monitorInitializing() {
+	public void monitorInitializing(OperationMonitor operationMonitor) {
 
 	}
 	
 	@Override
-	public void monitorUpdate(float elaborated) {
+	public void monitorUpdate(OperationMonitor operationMonitor) {
 
 	}
 	
@@ -212,32 +212,23 @@ public class CSVOperationInProgressCard extends WizardCard implements
 	}
 
 	@Override
-	public void monitorGeneratingView() {
+	public void monitorGeneratingView(OperationMonitor operationMonitor) {
 		// TODO Auto-generated method stub
 
 	}
 
 	@Override
-	public void monitorValidate(float elaborated) {
+	public void monitorValidate(OperationMonitor operationMonitor) {
 		// TODO Auto-generated method stub
 
 	}
 
-
-	@Override
-	public void monitorChanged(OperationMonitor operationMonitor) {
-		// TODO Auto-generated method stub
-		
-	}
-
-
 	@Override
 	public void monitorAborted() {
 		// TODO Auto-generated method stub
 		
 	}
 
-
 	@Override
 	public void monitorPutInBackground() {
 		// TODO Auto-generated method stub