diff --git a/src/main/java/org/gcube/portlets/user/td/extractcodelistwidget/client/TargetColumnsSelectionPanel.java b/src/main/java/org/gcube/portlets/user/td/extractcodelistwidget/client/TargetColumnsSelectionPanel.java
index fd045c0..07d31c3 100644
--- a/src/main/java/org/gcube/portlets/user/td/extractcodelistwidget/client/TargetColumnsSelectionPanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/extractcodelistwidget/client/TargetColumnsSelectionPanel.java
@@ -2,6 +2,13 @@ package org.gcube.portlets.user.td.extractcodelistwidget.client;
 
 import java.util.ArrayList;
 
+import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTIsLockedException;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
+import org.gcube.portlets.user.td.gwtservice.shared.extract.ExtractCodelistTargetColumn;
+import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnData;
+import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnMockUp;
+import org.gcube.portlets.user.td.gwtservice.shared.tr.TabResource;
 import org.gcube.portlets.user.td.columnwidget.client.create.CreateDefColumnDialog;
 import org.gcube.portlets.user.td.columnwidget.client.create.CreateDefColumnListener;
 import org.gcube.portlets.user.td.columnwidget.client.dimension.CodelistSelectionDialog;
@@ -10,13 +17,6 @@ import org.gcube.portlets.user.td.columnwidget.client.properties.ColumnDataPrope
 import org.gcube.portlets.user.td.columnwidget.client.properties.ExtractCodelistDefColumnPropertiesCombo;
 import org.gcube.portlets.user.td.columnwidget.client.resources.ResourceBundle;
 import org.gcube.portlets.user.td.columnwidget.client.utils.UtilsGXT3;
-import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
-import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTIsLockedException;
-import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
-import org.gcube.portlets.user.td.gwtservice.shared.extract.ExtractCodelistTargetColumn;
-import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnData;
-import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnMockUp;
-import org.gcube.portlets.user.td.gwtservice.shared.tr.TabResource;
 import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.TableType;