diff --git a/pom.xml b/pom.xml
index 6ceef1f..cc13717 100644
--- a/pom.xml
+++ b/pom.xml
@@ -14,6 +14,8 @@
 	<properties>
 		<webappDirectory>${project.basedir}/src/main/webapp/WEB-INF</webappDirectory>
 		<distroDirectory>${project.basedir}/distro</distroDirectory>
+		<maven.compiler.target>1.8</maven.compiler.target>
+		<maven.compiler.source>1.8</maven.compiler.source>
 	</properties>
 	<dependencyManagement>
 		<dependencies>
diff --git a/src/main/java/org/gcube/vremanagement/whnmanager/jaxws/ws/WhnManagerImpl.java b/src/main/java/org/gcube/vremanagement/whnmanager/jaxws/ws/WhnManagerImpl.java
index 14fe0e9..f3cad93 100644
--- a/src/main/java/org/gcube/vremanagement/whnmanager/jaxws/ws/WhnManagerImpl.java
+++ b/src/main/java/org/gcube/vremanagement/whnmanager/jaxws/ws/WhnManagerImpl.java
@@ -51,7 +51,7 @@ public class WhnManagerImpl implements WhnManager{
 					request = request.header(entry.getKey(), entry.getValue());
 					
 				
-				SimpleCredentials credentials = ((DefaultAuthorizationProvider) appContext.container().configuration().authorizationProvider()).getCredentials();
+				SimpleCredentials credentials = ((DefaultAuthorizationProvider) appContext.container().authorizationProvider()).getCredentials();
 				
 				HttpURLConnection response = request.post(String.format(" \"name\": \"ghn_client_add_to_contexts\",\n" + 
 								" \"input\" : {\n" + 
@@ -86,7 +86,7 @@ public class WhnManagerImpl implements WhnManager{
 		ValidationUtils.valid("context", context);
 		ApplicationContext appContext = ContextProvider.get();
 		if(context!=null){
-			logger.trace("allowed container in context are {} ",appContext.container().configuration().authorizationProvider().getContexts());
+			logger.trace("allowed container in context are {} ",appContext.container().authorizationProvider().getContexts());
 			
 			GXHTTPStringRequest request = GXHTTPStringRequest.newRequest("https://conductor.dev.d4science.org/api");
 			try {
@@ -96,7 +96,7 @@ public class WhnManagerImpl implements WhnManager{
 					request = request.header(entry.getKey(), entry.getValue());
 					
 				
-				SimpleCredentials credentials = ((DefaultAuthorizationProvider) appContext.container().configuration().authorizationProvider()).getCredentials();
+				SimpleCredentials credentials = ((DefaultAuthorizationProvider) appContext.container().authorizationProvider()).getCredentials();
 				
 				HttpURLConnection response = request.post(String.format(" \"name\": \"ghn_client_remove_from_contexts\",\n" + 
 								" \"input\" : {\n" +