diff --git a/Code/ApplicationEngine/otbWrapperApplication.cxx b/Code/ApplicationEngine/otbWrapperApplication.cxx
index f4f08676c28c30a48c774efe3f85afe5d7071277..af47ed6724cbc3fff03b9bf248aa858d6fb1a947 100644
--- a/Code/ApplicationEngine/otbWrapperApplication.cxx
+++ b/Code/ApplicationEngine/otbWrapperApplication.cxx
@@ -35,6 +35,8 @@
 
 #include "otbWrapperParameterGroup.h"
 
+#include "otbWrapperAddProcessToWatchEvent.h"
+
 namespace otb
 {
 namespace Wrapper
@@ -125,7 +127,9 @@ void Application::ExecuteAndWriteOutput()
       {
       Parameter* param = GetParameterByKey(*it);
       OutputImageParameter* outputParam = dynamic_cast<OutputImageParameter*>(param);
+      outputParam->InitializeWriters();
       m_CurrentProcess = outputParam->GetWriter();
+      AddProcess(outputParam->GetWriter(),"Writer ");
       outputParam->Write();
       m_WroteOutput++;
       }
@@ -754,12 +758,21 @@ Application::IsApplicationReady()
     // Check all Input Parameters
     if (!this->HasValue(*it) && IsMandatory(*it))
       {
-      ready = false;
+      return false;
       }
     }
 
   return ready;
 }
 
+void
+Application::AddProcess(itk::ProcessObject* object, std::string description)
+{
+  AddProcessToWatchEvent event;
+  event.SetProcess(object);
+  event.SetProcessDescription(description);
+  this->InvokeEvent(event);
+}
+
 }
 }
diff --git a/Code/ApplicationEngine/otbWrapperApplication.h b/Code/ApplicationEngine/otbWrapperApplication.h
index 1fd4c9fa65d0ddccf99afc28c43650f4cc1c5a19..05035adbbc9d2b8e93de624fdf61f25f2274eddc 100644
--- a/Code/ApplicationEngine/otbWrapperApplication.h
+++ b/Code/ApplicationEngine/otbWrapperApplication.h
@@ -39,7 +39,7 @@ namespace Wrapper
  *  TODO
  *
  */
-  class ITK_EXPORT Application: public itk::Object
+class ITK_EXPORT Application: public itk::Object
 {
 public:
   /** Standard class typedefs. */
@@ -353,6 +353,8 @@ public:
 
   itk::Logger* GetLogger();
 
+  void AddProcess(itk::ProcessObject* object, std::string description);
+
 protected:
   /** Constructor */
   Application();