diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java
index a0868d0..2197374 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java
@@ -347,14 +347,25 @@ public interface TDGWTService extends RemoteService {
 	public void startSDMXExport(SDMXExportSession exportSession)
 			throws TDGWTServiceException;
 
+	
 	// Change Column Type
 
-	// Monitor
+	/**
+	 * Get Operation Monitor during the Change Column Type operation
+	 * 
+	 * @return
+	 * @throws TDGWTServiceException
+	 */
 	public ChangeColumnTypeMonitor getChangeColumnTypeMonitor()
 			throws TDGWTServiceException;
 
-	// Change Column to Measure
-	public void startChangeToMeasureColumn(
+	/**
+	 * Start change column type 
+	 * 
+	 * @param changeColumnTypeSession 
+	 * @throws TDGWTServiceException
+	 */
+	public void startChangeColumnType(
 			ChangeColumnTypeSession changeColumnTypeSession) throws TDGWTServiceException;
 
 }
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java
index f8930ba..f47ad8b 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java
@@ -119,6 +119,6 @@ public interface TDGWTServiceAsync {
 	
 	//Change Column Type 
 	void  getChangeColumnTypeMonitor(AsyncCallback<ChangeColumnTypeMonitor> callback);
-	void startChangeToMeasureColumn(ChangeColumnTypeSession changeColumnTypeSession,AsyncCallback<Void> callback);
+	void startChangeColumnType(ChangeColumnTypeSession changeColumnTypeSession,AsyncCallback<Void> callback);
 	
 }
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
index 48a9a3d..a583b6f 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
@@ -2100,32 +2100,104 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 	}
 
 	/**
-	 * Retrive parameters for change column type operation
+	 * Retrieve OperationExecution for change column type 
 	 * 
 	 * @param changeColumnTypeSession
 	 * @return
 	 */
-	protected Map<String, Object> retrieveChangeColumnTypeParameters(
-			ChangeColumnTypeSession changeColumnTypeSession) {
+	protected OperationExecution retriveOperationExecution(
+			TabularDataService service,
+			ChangeColumnTypeSession changeColumnTypeSession)
+			throws TDGWTServiceException {
 
+		OperationExecution invocation = null;
+		List<OperationDefinition> capabilities = service.getCapabilities();
+
+		logger.debug(changeColumnTypeSession.toString());
+		OperationDefinition operationDefinition;
 		Map<String, Object> map = new HashMap<String, Object>();
 
 		if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
 				ColumnTypeCode.MEASURE) == 0) {
+			operationDefinition = getOperationDescriptorWithId(
+					OperationsId.ChangeToMeasureColumn.toString(), capabilities);
 
 			map.put(Constants.PARAMETER_DATA_TYPE, ColumnDataTypeMap
 					.map(changeColumnTypeSession.getColumnDataType()));
 			map.put(Constants.PARAMETER_DATA_TYPE_TARGET, ColumnDataTypeMap
 					.map(changeColumnTypeSession.getColumnDataTypeTarget()));
+			invocation = new OperationExecution(changeColumnTypeSession
+					.getColumnData().getName(),
+					operationDefinition.getOperationId(), map);
+		} else {
+			if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
+					ColumnTypeCode.ATTRIBUTE) == 0) {
+				operationDefinition = getOperationDescriptorWithId(
+						OperationsId.ChangeToAttributeColumn.toString(), capabilities);
 
+				map.put(Constants.PARAMETER_DATA_TYPE, ColumnDataTypeMap
+						.map(changeColumnTypeSession.getColumnDataType()));
+				invocation = new OperationExecution(changeColumnTypeSession
+						.getColumnData().getName(),
+						operationDefinition.getOperationId(), map);
+			} else {
+				if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
+						ColumnTypeCode.CODE) == 0) {
+					operationDefinition = getOperationDescriptorWithId(
+							OperationsId.ChangeToCodeColumn.toString(), capabilities);
+					invocation = new OperationExecution(changeColumnTypeSession
+							.getColumnData().getName(),
+							operationDefinition.getOperationId(),map);
+				} else {
+					if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
+							ColumnTypeCode.CODENAME) == 0) {
+						operationDefinition = getOperationDescriptorWithId(
+								OperationsId.ChangeToCodeName.toString(), capabilities);
+						invocation = new OperationExecution(changeColumnTypeSession
+								.getColumnData().getName(),
+								operationDefinition.getOperationId(),map);
+					} else {
+						if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
+								ColumnTypeCode.CODEDESCRIPTION) == 0) {
+							operationDefinition = getOperationDescriptorWithId(
+									OperationsId.ChangeToCodeDescription.toString(), capabilities);
+							invocation = new OperationExecution(changeColumnTypeSession
+									.getColumnData().getName(),
+									operationDefinition.getOperationId(),map);
+						} else {
+							if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
+									ColumnTypeCode.ANNOTATION) == 0) {
+								operationDefinition = getOperationDescriptorWithId(
+										OperationsId.ChangeToAnnotationColumn.toString(), capabilities);
+								invocation = new OperationExecution(changeColumnTypeSession
+										.getColumnData().getName(),
+										operationDefinition.getOperationId(),map);
+							} else {
+								if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
+										ColumnTypeCode.DIMENSION) == 0) {
+								} else {
+									if (changeColumnTypeSession.getColumnTypeCodeTarget().compareTo(
+											ColumnTypeCode.TIMEDIMENSION) == 0) {
+									} else {
+										
+									}
+								}
+							}
+						}
+						
+					}
+				}
+			}
 		}
-		return map;
-	};
+
+		return invocation;
+	}
 
 	/**
+	 * 
 	 * {@inheritDoc}
 	 */
-	public void startChangeToMeasureColumn(
+	public void startChangeColumnType(
 			ChangeColumnTypeSession changeColumnTypeSession)
 			throws TDGWTServiceException {
 		try {
@@ -2138,22 +2210,15 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 					aslSession.getUsername()));
 			TabularDataService service = TabularDataServiceFactory.getService();
 
-			List<OperationDefinition> capabilities = service.getCapabilities();
-
-			OperationDefinition changeToMeasureColumnOperation = getOperationDescriptorWithId(
-					OperationsId.ChangeToMeasureColumn.toString(), capabilities);
-
-			logger.debug(changeColumnTypeSession.toString());
-
-			Map<String, Object> parameterInstance = retrieveChangeColumnTypeParameters(changeColumnTypeSession);
-
-			OperationExecution invocation = new OperationExecution(
-					changeColumnTypeSession.getColumnData().getName(),
-					changeToMeasureColumnOperation.getOperationId(),
-					parameterInstance);
-
+			OperationExecution invocation = retriveOperationExecution(service,
+					changeColumnTypeSession);
+			if(invocation==null){
+				throw new TDGWTServiceException("Error in ChangeColumnType: Operation not supported for now!");
+			}
+			
 			TabularResourceId serviceTR = new TabularResourceId(
-					Long.valueOf(changeColumnTypeSession.getColumnData().getTrId().getId()));
+					Long.valueOf(changeColumnTypeSession.getColumnData()
+							.getTrId().getId()));
 			logger.debug("OperationInvocation: \n" + invocation.toString());
 			Task trTask = service.execute(invocation, serviceTR);
 			logger.debug("Start Task on service: TaskId " + trTask.getId());
@@ -2161,7 +2226,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 			return;
 		} catch (Exception e) {
 			e.printStackTrace();
-			throw new TDGWTServiceException("Error in ChangeToMeasureColumn: "
+			throw new TDGWTServiceException("Error in ChangeColumnType: "
 					+ e.getLocalizedMessage());
 		}
 
@@ -2216,7 +2281,8 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 						Table table = task.getResult().getPrimaryTable();
 						logger.debug("Table retrived: " + table.toString());
 						TRId trId = new TRId();
-						trId.setId(changeColumnTypeSession.getColumnData().getTrId().getId());
+						trId.setId(changeColumnTypeSession.getColumnData()
+								.getTrId().getId());
 						trId.setTableId(String
 								.valueOf(table.getId().getValue()));
 						trId.setTableType(table.getTableType().getName());