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 42fe4ee..82087ac 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
@@ -75,6 +75,6 @@ public interface TDGWTService extends RemoteService {
 	
 	public ArrayList<CSVRowError> checkCSV(long errorsLimit) throws TDGWTServiceException;
 	
-	public void startCSVImport(boolean[] columnToImportMask) throws TDGWTServiceException;
+	public void startCSVImport(CSVImportSession s) 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 407b091..6cbf3df 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
@@ -73,7 +73,7 @@ public interface TDGWTServiceAsync {
 	
 	void checkCSV(long errorsLimit, AsyncCallback<ArrayList<CSVRowError> > callback);
 	
-	void startCSVImport(boolean[] columnToImportMask, AsyncCallback<Void> callback);
+	void startCSVImport(CSVImportSession s, 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 681893d..fcd86e7 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
@@ -77,10 +77,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 	protected TabularDataService service;
 	protected HttpSession session;
 	protected ASLSession aslSession;
-	
-	
-	
-	
+
 	public void setTabResource(TabResource tabResource)
 			throws TDGWTServiceException {
 		try {
@@ -113,14 +110,13 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 			session = this.getThreadLocalRequest().getSession();
 			aslSession = SessionUtil.getAslSession(session);
 
-			TabResource currentTR=SessionUtil.getTabResource(session);
-			if(currentTR==null){
-				logger.error(
-						"CURRENT_TABULAR_RESOURCE is null");
+			TabResource currentTR = SessionUtil.getTabResource(session);
+			if (currentTR == null) {
+				logger.error("CURRENT_TABULAR_RESOURCE is null");
 				throw new TDGWTServiceException(
 						"CURRENT_TABULAR_RESOURCE is null");
 			}
-			
+
 			return currentTR;
 
 		} catch (Exception e) {
@@ -194,29 +190,27 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 		}
 	}
 
-	
-	protected void syncTRMetaData(TabularResource tr,TabResource tabResource){
-		Date date=Calendar.getInstance().getTime();
+	protected void syncTRMetaData(TabularResource tr, TabResource tabResource) {
+		Date date = Calendar.getInstance().getTime();
 		tabResource.setDate(sdf.format(date));
 		tr.setMetadata(new NameMetadata(tabResource.getName()));
 		tr.setMetadata(new DescriptionMetadata(tabResource.getDescription()));
 		tr.setMetadata(new CreationDateMetadata(date));
 		tr.setMetadata(new AgencyMetadata(tabResource.getAgency()));
 		tr.setMetadata(new RightsMetadata(tabResource.getRight()));
-		
+
 		TRId trId = new TRId(String.valueOf(tr.getId().getValue()));
 		tabResource.setTrId(trId);
 	}
-	
-	
+
 	protected void retriveTRMetadataFromService(TabularResource tr)
 			throws TDGWTServiceException {
 		retriveTRMetadataFromService(tr, 0);
 	}
-	
+
 	protected TabResource retriveTRMetadataFromService(TabularResource tr, int i)
 			throws TDGWTServiceException {
-		
+
 		NameMetadata nameMeta;
 		RightsMetadata rightsMeta;
 		CreationDateMetadata creationDateMeta;
@@ -458,9 +452,9 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 					.getTabResource();
 
 			TabularResource serviceTR = trService.createTabularResource();
-			
-			syncTRMetaData(serviceTR,importSDMXTabResource);
-			
+
+			syncTRMetaData(serviceTR, importSDMXTabResource);
+
 			SessionUtil
 					.setSDMXImportTabResource(session, importSDMXTabResource);
 
@@ -546,8 +540,8 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 									sdmxImportTabResource.setTrId(trId);
 									SessionUtil.setSDMXImportTabResource(
 											session, sdmxImportTabResource);
-									SessionUtil
-									.setTabResource(session, sdmxImportTabResource);
+									SessionUtil.setTabResource(session,
+											sdmxImportTabResource);
 
 									SessionUtil.setTRId(session, trId);
 
@@ -739,7 +733,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 	}
 
 	@Override
-	public void startCSVImport(boolean[] columnToImportMask)
+	public void startCSVImport(CSVImportSession csvImportSession)
 			throws TDGWTServiceException {
 		session = this.getThreadLocalRequest().getSession();
 		if (session == null) {
@@ -763,18 +757,18 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 					"Error retrieving the fileUploadSession: null");
 		}
 
-		importCSVFileOnService(user, fileUploadSession, columnToImportMask);
+		importCSVFileOnService(user, fileUploadSession, csvImportSession);
 
 	}
 
 	protected Map<String, Object> csvImportFileParameter(
 			String fileUrlOnStorage, FileUploadSession fileUploadSession,
-			boolean[] columnToImportMask) {
+			CSVImportSession csvImportSession) {
 		final String ENCODING = "encoding";
 		final String HASHEADER = "hasHeader";
 		final String SEPARATOR = "separator";
 		final String URL = "url";
-
+		
 		Map<String, Object> parameterInstances = new HashMap<String, Object>();
 		parameterInstances.put(URL, fileUrlOnStorage);
 		parameterInstances.put(SEPARATOR, fileUploadSession
@@ -790,7 +784,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 	}
 
 	protected void importCSVFileOnService(String user,
-			FileUploadSession fileUploadSession, boolean[] columnToImportMask)
+			FileUploadSession fileUploadSession, CSVImportSession csvImportSession)
 			throws TDGWTServiceException {
 		FilesStorage filesStorage = new FilesStorage();
 
@@ -798,7 +792,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 				fileUploadSession.getCsvFile());
 
 		Map<String, Object> parameterInstance = csvImportFileParameter(
-				fileUrlOnStorage, fileUploadSession, columnToImportMask);
+				fileUrlOnStorage, fileUploadSession, csvImportSession);
 
 		service = new TabularDataServiceMock();