diff --git a/IOB-WIN/IobWPS.cs b/IOB-WIN/IobWPS.cs
index 7bef99ec..dc9f115a 100644
--- a/IOB-WIN/IobWPS.cs
+++ b/IOB-WIN/IobWPS.cs
@@ -149,8 +149,8 @@ namespace IOB_WIN
     {                                
       lgInfo("Starting CHROME Driver");
       // preparo opzione headless x CHROME
-      var o = new ChromeOptions();        
-      //o.AddArgument("headless");                  
+      var o = new ChromeOptions();
+      o.AddArgument("headless");
       ChromeDriverService service = ChromeDriverService.CreateDefaultService(Environment.CurrentDirectory);
       service.HideCommandPromptWindow = true;
       driver = new ChromeDriver(service, o);
diff --git a/Jenkinsfile b/Jenkinsfile
index d255d5f1..0a4c4a50 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -16,7 +16,7 @@ pipeline {
 
       /* calcolo numero versione... diverso x branch MASTER/DEVELOP */
       script {
-        withEnv(['NEXT_BUILD_NUMBER=420']) {
+        withEnv(['NEXT_BUILD_NUMBER=421']) {
           // env.versionNumber = VersionNumber(versionNumberString : '2.3.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2006-01-01', skipFailedBuilds: true)
           env.versionNumber = VersionNumber(versionNumberString : '2.3.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2006-01-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
           env.APP_NAME = 'MAPO-IOB-WIN'