diff --git a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/GeoportalDataViewer.java b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/GeoportalDataViewer.java
index 6349567..f307efe 100644
--- a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/GeoportalDataViewer.java
+++ b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/GeoportalDataViewer.java
@@ -224,7 +224,7 @@ public class GeoportalDataViewer implements EntryPoint {
 
 								GWT.log("Loading collections, count " + result.getAvailableCollections().size());
 
-								mainPanel.setAvailableCollections(result.getAvailableCollections().values());
+								mainPanel.setAvailableCollections(result.getAvailableCollections().values(), paramGeonaItemType);
 
 								if (paramGeonaItemID != null) {
 									if (paramGeonaItemType == null) {
diff --git a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/GeonaDataViewMainPanel.java b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/GeonaDataViewMainPanel.java
index 16853d6..e7aacda 100644
--- a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/GeonaDataViewMainPanel.java
+++ b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/GeonaDataViewMainPanel.java
@@ -2,6 +2,7 @@ package org.gcube.portlets.user.geoportaldataviewer.client.ui;
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.List;
 
 import org.gcube.application.geoportalcommon.shared.GeoportalItemReferences;
@@ -139,6 +140,8 @@ public class GeonaDataViewMainPanel extends Composite {
 
 	private HandlerManager applicationBus;
 
+	private HashMap<String, List<CheckBox>> mapCollectionCheckBoxes;
+
 	public GeonaDataViewMainPanel(HandlerManager applicationBus, int mapHeight,
 			List<ItemFieldsResponse> itemFieldsReponse) {
 		initWidget(uiBinder.createAndBindUi(this));
@@ -268,6 +271,15 @@ public class GeonaDataViewMainPanel extends Composite {
 			}
 		}, ClickEvent.getType());
 
+		openCollectionDropDown.addDomHandler(new ClickHandler() {
+
+			@Override
+			public void onClick(ClickEvent event) {
+				// event.preventDefault();
+				event.stopPropagation();
+
+			}
+		}, ClickEvent.getType());
 	}
 
 	/**
@@ -478,18 +490,20 @@ public class GeonaDataViewMainPanel extends Composite {
 	 * @param listBaseLayers the new base layers
 	 */
 
-	public void setAvailableCollections(Collection<GCubeCollection> collection) {
+	public void setAvailableCollections(Collection<GCubeCollection> collection, String openCollectionID) {
 		GWT.log("Init Available collections menu");
 		if (collection == null || collection.isEmpty())
 			GWT.log("!!! No Available collections");
 
+		mapCollectionCheckBoxes = new HashMap<String, List<CheckBox>>();
+
 		for (GCubeCollection coll : collection) {
 			GWT.log("Found available collection " + coll);
 			String label = coll.getUcd().getName();
-			String id = coll.getUcd().getId();
+			final String collectionID = coll.getUcd().getId(); // collectionID == UCD_Id
 
 			CheckBox checkbox = new CheckBox(label);
-			checkbox.setId("gcubeCollectionSelector_" + id);
+			checkbox.setId("gcubeCollectionSelector_" + collectionID);
 
 			checkbox.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
 
@@ -497,8 +511,8 @@ public class GeonaDataViewMainPanel extends Composite {
 				public void onValueChange(ValueChangeEvent<Boolean> event) {
 					GWT.log("Collection selector flag changed to value : " + event.toDebugString());
 
-					String collectionID = ((CheckBox) event.getSource()).getId().replace("gcubeCollectionSelector_",
-							"");
+//					String collectionID = ((CheckBox) event.getSource()).getId().replace("gcubeCollectionSelector_",
+//							"");
 
 					GWT.log("Collection ID is : " + collectionID + ", event value: " + event.getValue());
 					if (event.getValue()) {
@@ -512,16 +526,39 @@ public class GeonaDataViewMainPanel extends Composite {
 			});
 
 			openCollectionPanel.add(checkbox);
+
+			List<CheckBox> listCollections = mapCollectionCheckBoxes.get(collectionID);
+			if (listCollections == null)
+				listCollections = new ArrayList<CheckBox>();
+
+			listCollections.add(checkbox);
+			mapCollectionCheckBoxes.put(collectionID, listCollections);
+
+			// Opening All Collections if openCollectionID is null
+			if (openCollectionID == null) {
+				checkbox.setValue(true, true);
+				// String collectionID = checkbox.getId().replace("gcubeCollectionSelector_",
+				// "");
+				GWT.log("Opening the collection: " + collectionID);
+				applicationBus.fireEvent(new OpenCollectionEvent(collectionID));
+			}
+
 		}
 
-		// Open the first collection as default
-		if (collection != null && collection.size() > 0) {
-			CheckBox checkbox = (CheckBox) openCollectionPanel.getWidget(0);
-			checkbox.setValue(true, true);
-			String collectionID = checkbox.getId().replace("gcubeCollectionSelector_", "");
-			applicationBus.fireEvent(new OpenCollectionEvent(collectionID));
-		}
+		// Opening All Collections if openCollectionID is null
+		if (openCollectionID != null) {
 
+			List<CheckBox> listCheckBoxes = mapCollectionCheckBoxes.get(openCollectionID);
+
+			if (listCheckBoxes != null) {
+				for (CheckBox checkBox : listCheckBoxes) {
+					checkBox.setValue(true, true);
+					String collectionID = checkBox.getId().replace("gcubeCollectionSelector_", "");
+					GWT.log("Opening the input collection: " + collectionID);
+					applicationBus.fireEvent(new OpenCollectionEvent(collectionID));
+				}
+			}
+		}
 	}
 
 	public void openCollectionMenu() {
diff --git a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/server/GeoportalDataViewerServiceImpl.java b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/server/GeoportalDataViewerServiceImpl.java
index 82d602c..535a25a 100644
--- a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/server/GeoportalDataViewerServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/server/GeoportalDataViewerServiceImpl.java
@@ -667,7 +667,7 @@ public class GeoportalDataViewerServiceImpl extends RemoteServiceServlet impleme
 
 		try {
 			SessionUtil.getCurrentContext(this.getThreadLocalRequest(), true);
-
+			new GeoportalServiceIdentityProxy(this.getThreadLocalRequest());
 			List<ItemFieldsResponse> listIFResponse = new ArrayList<ItemFieldsResponse>();
 
 			List<String> handlersIds = Arrays.asList(GEOPORTAL_DATA_HANDLER.geoportal_basic_data_list.getId());