diff --git a/src/main/java/org/gcube/common/storagehub/client/dsl/FolderContainer.java b/src/main/java/org/gcube/common/storagehub/client/dsl/FolderContainer.java
index 1337e93..30db7dc 100644
--- a/src/main/java/org/gcube/common/storagehub/client/dsl/FolderContainer.java
+++ b/src/main/java/org/gcube/common/storagehub/client/dsl/FolderContainer.java
@@ -59,6 +59,21 @@ public class FolderContainer extends ItemContainer<FolderItem>{
 		return new FileContainer(itemclient, itemclient.uploadFile(stream, this.itemId , filename, description));
 	}
 	
+	/**
+	 * 
+	 * creates a {@AbstractFileItem} inside the folder represented by this FolderContainer
+	 * 
+	 * @param stream the file stream
+	 * @param filename the name of the item in the workspace
+	 * @param description the description of the item in the workspace
+	 * @return {@FileContainer} of the Item created
+	 * @throws {@InvalidItemException} 
+	 * @throws {@UserNotAuthorizedException} if user is not authorized to write in this folder
+	 */
+	public FileContainer uploadFile(InputStream stream, String filename, String description, long size) throws StorageHubException {
+		return new FileContainer(itemclient, itemclient.uploadFile(stream, this.itemId , filename, description, size));
+	}
+	
 	/**
 	 * 
 	 * creates a {@AbstractFileItem} inside the folder represented by this FolderContainer
@@ -72,6 +87,7 @@ public class FolderContainer extends ItemContainer<FolderItem>{
 	public FileContainer uploadFile(File file, String description) throws StorageHubException {
 		return new FileContainer(itemclient, itemclient.uploadFile(file, this.itemId , file.getName(), description));
 	}
+		
 	
 	/**
 	 * 
@@ -102,6 +118,20 @@ public class FolderContainer extends ItemContainer<FolderItem>{
 		return new FolderContainer(itemclient, itemclient.uploadArchive(stream, this.itemId , extractionFolderName));
 	}
 	
+	/**
+	 * 
+	 * creates a set of {@Item} in the workspace extracting the Archive
+	 * 
+	 * @param stream the file stream
+	 * @param extractionFolderName the root name of the folder where the archive will be extracted (A new folder with this name will be created)
+	 * @return {@FolderContainer} of the extraction Folder
+	 * @throws {@InvalidItemException} 
+	 * @throws {@UserNotAuthorizedException} if user is not authorized to write in this folder
+	 */
+	public FolderContainer uploadArchive(InputStream stream, String extractionFolderName, long size) throws StorageHubException {
+		return new FolderContainer(itemclient, itemclient.uploadArchive(stream, this.itemId , extractionFolderName, size));
+	}
+	
 	/**
 	 * 
 	 * create a new {@FolderItem} inside the {@FolderItem} represented by this FolderContainer
diff --git a/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java b/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java
index af878f5..9c64fa2 100644
--- a/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java
+++ b/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java
@@ -633,7 +633,7 @@ public class DefaultItemManager extends DefaultManagerClient implements ItemMana
 	
 	@Override
 	public String uploadFile(InputStream stream, String parentId, String fileName, String description) throws StorageHubException {
-		return this.uploadFile(stream, parentId, fileName, description, 0);
+		return this.uploadFile(stream, parentId, fileName, description, -1);
 	}
 		
 	@Override