diff --git a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/LabelColumnPanel.java b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/LabelColumnPanel.java
index 54d7713..37db709 100644
--- a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/LabelColumnPanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/LabelColumnPanel.java
@@ -48,29 +48,25 @@ import com.sencha.gxt.widget.core.client.form.TextField;
  */
 public class LabelColumnPanel extends FramedPanel implements
 		MonitorDialogListener {
-	protected static final String WIDTH = "640px";
-	protected static final String HEIGHT = "520px";
-	protected static final int LABELWIDTH = 120;
+	private static final String WIDTH = "640px";
+	private static final String HEIGHT = "520px";
+	private static final int LABELWIDTH = 120;
 
-	protected EventBus eventBus;
-	protected ChangeColumnTypeDialog parent;
-	protected TextField label = null;
-	protected TRId trId;
-	protected String columnName;
+	private EventBus eventBus;
+	private ChangeColumnTypeDialog parent;
+	private TRId trId;
+	
+	private ArrayList<ColumnData> columns;
+	private VerticalLayoutContainer columnsLayoutContainer;
 
-	protected ArrayList<ColumnData> columns;
-	protected SimpleContainer columnsContainer;
-	protected VerticalLayoutContainer columnsLayoutContainer;
+	private TextButton change;
 
-	protected TextButton change;
-
-	protected LabelColumnSession labelColumnSession;
+	private LabelColumnSession labelColumnSession;
 	private boolean updateStatus;
 	private VerticalLayoutContainer v;
 
 	public LabelColumnPanel(TRId trId, String columnName, EventBus eventBus) {
 		this.trId = trId;
-		this.columnName = columnName;
 		this.eventBus = eventBus;
 		updateStatus = false;
 		Log.debug("LabelColumnPanel(): [" + trId + " columnName: " + columnName
@@ -231,8 +227,6 @@ public class LabelColumnPanel extends FramedPanel implements
 
 	public void update(TRId trId, String columnName) {
 		this.trId = trId;
-		this.columnName = columnName;
-
 		updateStatus = true;
 		retrieveColumns();
 	}