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 d835c63..cf543ce 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
@@ -8806,7 +8806,9 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 			OpExecutionDirector director = new OpExecutionDirector();
 			director.setOperationExecutionBuilder(opEx);
 			director.constructOperationExecution();
-			OperationExecution invocation = director.getOperationExecution();
+			
+			ArrayList<OperationExecution> invocation = director
+					.getListOperationExecution();
 
 			if (invocation == null) {
 				throw new TDGWTServiceException(
@@ -8814,7 +8816,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 			}
 
 			logger.debug("OperationInvocation: \n" + invocation.toString());
-			Task trTask = service.execute(invocation, tabularResourceId);
+			Task trTask = service.executeBatch(invocation, tabularResourceId);
 			logger.debug("GeometryCreatePoint on service: TaskId "
 					+ trTask.getId());
 
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/opexecution/OpExecution4GeometryCreatePoint.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/opexecution/OpExecution4GeometryCreatePoint.java
index dc53581..2409c9f 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/opexecution/OpExecution4GeometryCreatePoint.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/opexecution/OpExecution4GeometryCreatePoint.java
@@ -1,5 +1,6 @@
 package org.gcube.portlets.user.td.gwtservice.server.opexecution;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -26,6 +27,10 @@ import org.gcube.portlets.user.td.widgetcommonevent.shared.operations.Operations
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import static org.gcube.data.analysis.tabulardata.expression.dsl.Comparators.*;
+import static org.gcube.data.analysis.tabulardata.expression.dsl.Logicals.*;
+import static org.gcube.data.analysis.tabulardata.expression.dsl.Types.*;
+
 /**
  * Operation Execution for change table type
  * 
@@ -34,6 +39,8 @@ import org.slf4j.LoggerFactory;
  * 
  */
 public class OpExecution4GeometryCreatePoint extends OpExecutionBuilder {
+	
+
 	protected static Logger logger = LoggerFactory
 			.getLogger(OpExecution4GeometryCreatePoint.class);
 
@@ -49,12 +56,10 @@ public class OpExecution4GeometryCreatePoint extends OpExecutionBuilder {
 
 	@Override
 	public void buildOpEx() throws TDGWTServiceException {
-		OperationExecution invocation = null;
-
 		logger.debug(geometryCreatePointSession.toString());
-		OperationDefinition operationDefinition;
-		Map<String, Object> map = new HashMap<String, Object>();
+		ArrayList<OperationExecution> invocations = new ArrayList<OperationExecution>();
 
+		//Retrieve longitude and latitude
 		TRId trId = geometryCreatePointSession.getTrId();
 		logger.debug("trID: " + trId);
 		if (trId == null) {
@@ -94,10 +99,33 @@ public class OpExecution4GeometryCreatePoint extends OpExecutionBuilder {
 				longitudeId);
 
 		
+		
+		//Validations
+		OperationDefinition operationValidation;
+		Map<String, Object> validationParameters = new HashMap<String, Object>();
+		
+		operationValidation = OperationDefinitionMap.map(
+				OperationsId.ExpressionValidation.toString(), service);
+		
+		validationParameters.put(Constants.PARAMETER_EXPRESSION_VALIDATION_TITLE, "Coordinates validation");
+		String description = new String("Longitude value must be between [-180, 180], Latitude value must be between [-90, 90]");
+		Expression expression = and(lessEq(longitudeColumnReference, numeric(180)), greaterEq(longitudeColumnReference, numeric(-180)), lessEq(latitudeColumnReference, numeric(90)), greaterEq(latitudeColumnReference, numeric(-90)));
+		validationParameters.put(Constants.PARAMETER_EXPRESSION_VALIDATION_DESCRIPTION, description);
+		validationParameters.put(Constants.PARAMETER_EXPRESSION_VALIDATION_EXPRESSION, expression);
+		
+		invocations.add(new OperationExecution(
+				operationValidation.getOperationId(), validationParameters));
+		
+		
+		
+		//Add Column
 		Expression point = new Cast(new Concat(new TDText("POINT("), new Concat(
 				longitudeColumnReference, new Concat(new TDText(" "),
 						new Concat(latitudeColumnReference, new TDText(")"))))),new GeometryType());
-
+		
+		OperationDefinition operationDefinition;
+		Map<String, Object> map = new HashMap<String, Object>();
+		
 		operationDefinition = OperationDefinitionMap.map(
 				OperationsId.AddColumn.toString(), service);
 
@@ -108,10 +136,11 @@ public class OpExecution4GeometryCreatePoint extends OpExecutionBuilder {
 				new ImmutableLocalizedText(geometryCreatePointSession
 						.getColumnLabel()));
 		map.put(Constants.PARAMETER_ADD_COLUMN_VALUE, point);
-		invocation = new OperationExecution(
-				operationDefinition.getOperationId(), map);
-
-		operationExecutionSpec.setOp(invocation);
+		invocations.add(new OperationExecution(
+				operationDefinition.getOperationId(), map));
+		
+		//Set ops
+		operationExecutionSpec.setOps(invocations);
 
 	}
 
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/Constants.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/Constants.java
index 3b6c7d5..940ab18 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/Constants.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/Constants.java
@@ -117,5 +117,9 @@ public class Constants {
 	public static final String PARAMETER_GEOSPATIAL_CREATE_COORDINATES_RESOLUTION = "resolution";
 	public static final String PARAMETER_GEOSPATIAL_CREATE_COORDINATES_USER = "user";
 	public static final String PARAMETER_GEOSPATIAL_CREATE_COORDINATES_QUADRANT = "quadrant";
+
+	public static final String PARAMETER_EXPRESSION_VALIDATION_EXPRESSION = "expression";
+	public static final String PARAMETER_EXPRESSION_VALIDATION_DESCRIPTION = "description";
+	public static final String PARAMETER_EXPRESSION_VALIDATION_TITLE = "title";
 	
 }