diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnExpressionDialog.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnExpressionDialog.java
index eda712c..4b3592a 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnExpressionDialog.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnExpressionDialog.java
@@ -3,6 +3,8 @@ package org.gcube.portlets.user.td.expressionwidget.client;
 import org.gcube.portlets.user.td.expressionwidget.client.resource.ExpressionResources;
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnData;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.ExpressionEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.ExpressionType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.expression.C_Expression;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnDataType;
@@ -15,7 +17,9 @@ import com.google.web.bindery.event.shared.EventBus;
 import com.sencha.gxt.widget.core.client.Window;
 import com.sencha.gxt.widget.core.client.box.AlertMessageBox;
 import com.sencha.gxt.widget.core.client.event.HideEvent;
+import com.sencha.gxt.widget.core.client.event.SelectEvent;
 import com.sencha.gxt.widget.core.client.event.HideEvent.HideHandler;
+import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 
 /**
  * 
@@ -62,12 +66,38 @@ public class ColumnExpressionDialog extends Window {
 		setBodyBorder(false);
 		setResizable(false);
 		setHeadingText("New Rule");
-		setClosable(false);
+		setClosable(true);
 		setModal(true);
 		forceLayoutOnResize = true;
 		getHeader().setIcon(ExpressionResources.INSTANCE.rule());
 
 	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected void initTools() {
+		super.initTools();
+
+		closeBtn.addSelectHandler(new SelectHandler() {
+
+			
+			public void onSelect(SelectEvent event) {
+				close();
+			}
+		});
+
+	}
+	
+	protected void close (){
+		ExpressionEvent expressionEvent = new ExpressionEvent(
+				ExpressionType.EXPRESSIONNULL);
+		Log.debug(expressionEvent.toString());
+		hide();
+		eventBus.fireEvent(expressionEvent);
+	}
+	
 
 	protected void create() {
 		if (column.getTypeCode()
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnFilterDialog.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnFilterDialog.java
index fc81c5b..372e0bd 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnFilterDialog.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ColumnFilterDialog.java
@@ -18,7 +18,9 @@ import com.google.web.bindery.event.shared.EventBus;
 import com.sencha.gxt.widget.core.client.Window;
 import com.sencha.gxt.widget.core.client.box.AlertMessageBox;
 import com.sencha.gxt.widget.core.client.event.HideEvent;
+import com.sencha.gxt.widget.core.client.event.SelectEvent;
 import com.sencha.gxt.widget.core.client.event.HideEvent.HideHandler;
+import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 
 
 /**
@@ -66,10 +68,27 @@ public class ColumnFilterDialog extends Window {
 		setBodyBorder(false);
 		setResizable(false);
 		setHeadingText("New Filter");
-		setClosable(false);
+		setClosable(true);
 		getHeader().setIcon(ExpressionResources.INSTANCE.filter());
 
 	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected void initTools() {
+		super.initTools();
+
+		closeBtn.addSelectHandler(new SelectHandler() {
+
+			
+			public void onSelect(SelectEvent event) {
+				close();
+			}
+		});
+
+	}
 
 	protected void create() {
 		if (column.getTypeCode()
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java
index ec6b523..bb49ae3 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java
@@ -6,6 +6,8 @@ import org.gcube.portlets.user.td.widgetcommonevent.shared.expression.C_Expressi
 
 import com.google.web.bindery.event.shared.EventBus;
 import com.sencha.gxt.widget.core.client.Window;
+import com.sencha.gxt.widget.core.client.event.SelectEvent;
+import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 
 
 /**
@@ -46,7 +48,25 @@ public class MultiColumnFilterDialog extends Window {
 
 	}
 	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected void initTools() {
+		super.initTools();
+
+		closeBtn.addSelectHandler(new SelectHandler() {
+
+			
+			public void onSelect(SelectEvent event) {
+				close();
+			}
+		});
+
+	}
 	
-	
+	protected void close() {
+		hide();
+	}
 
 }