diff --git a/pom.xml b/pom.xml
index 50df1d2..eebb6ee 100644
--- a/pom.xml
+++ b/pom.xml
@@ -332,6 +332,13 @@
 			<artifactId>tabular-data-template</artifactId>
 			<version>[1.0.0-SNAPSHOT,2.0.0-SNAPSHOT]</version>
 		</dependency>
+		
+		<!-- tabular-data-column-operation-widget -->
+		<dependency>
+			<groupId>org.gcube-portlets.user.tdcolumnoperation</groupId>
+			<artifactId>tabular-data-column-operation</artifactId>
+			<version>[1.0.0-SNAPSHOT,2.0.0-SNAPSHOT)</version>
+		</dependency>
 
 		<!-- LOGGING -->
 		<dependency>
diff --git a/src/main/java/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml b/src/main/java/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml
index 19a12cf..f9fd52e 100644
--- a/src/main/java/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml
+++ b/src/main/java/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml
@@ -46,7 +46,7 @@
 
 	<inherits name='org.gcube.portlets.user.td.taskswidget.TdTasksWidget' />
 	<inherits name="org.gcube.portlets.user.tdtemplate.TabularDataTemplate" />
-
+    <inherits name="org.gcube.portlets.user.tdcolumnoperation.TdColumnOperation"/>
 
 	<inherits name='org.gcube.portlets.widgets.sessionchecker.SessionChecker' />
 
diff --git a/src/main/resources/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml b/src/main/resources/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml
index 355b3a1..c760309 100644
--- a/src/main/resources/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml
+++ b/src/main/resources/org/gcube/portlets/user/td/tabulardataportlet.gwt.xml
@@ -45,7 +45,9 @@
 
 	<inherits name='org.gcube.portlets.user.td.taskswidget.TdTasksWidget' />
 	<inherits name="org.gcube.portlets.user.tdtemplate.TabularDataTemplate" />
-
+	<inherits name="org.gcube.portlets.user.tdcolumnoperation.TdColumnOperation"/>
+	
+	
 	<inherits name='org.gcube.portlets.widgets.sessionchecker.SessionChecker' />	
 
 	<!-- Specify the app entry point class. -->
diff --git a/src/main/webapp/WEB-INF/web.xml b/src/main/webapp/WEB-INF/web.xml
index 51fb883..9f91ea6 100644
--- a/src/main/webapp/WEB-INF/web.xml
+++ b/src/main/webapp/WEB-INF/web.xml
@@ -58,6 +58,12 @@
 		<servlet-class>org.gcube.portlets.user.tdtemplate.server.TdTemplateServiceImpl</servlet-class>
 	</servlet>
 	
+	<!-- TD Column Operation -->
+	 <servlet>
+		<servlet-name>TdColumnOperationServlet</servlet-name>
+		<servlet-class>org.gcube.portlets.user.tdcolumnoperation.server.TdColumnOperationServiceImpl</servlet-class>
+	</servlet>
+
 	
 
 	<!-- CSV IMPORT WIZARD -->
@@ -176,8 +182,12 @@
 		<servlet-name>tdTemplateServiceImpl</servlet-name>
 		<url-pattern>/tabulardataportlet/tdtemplate</url-pattern>
 	</servlet-mapping>
-
-
+	
+	<!-- TD Column Operation -->
+	<servlet-mapping>
+		<servlet-name>TdColumnOperationServlet</servlet-name>
+		<url-pattern>/tabulardataportlet/TdColumnOperationServlet</url-pattern>
+	</servlet-mapping>
 
 	<!-- CSV IMPORT WIZARD -->
 	<servlet-mapping>