diff --git a/Modules/Wrappers/ApplicationEngine/include/otbWrapperParameter.h b/Modules/Wrappers/ApplicationEngine/include/otbWrapperParameter.h
index 1672561d815b70e70e7cc50278806b67a9a812b7..5776138606c07ad87371d00aa855f7864156be03 100644
--- a/Modules/Wrappers/ApplicationEngine/include/otbWrapperParameter.h
+++ b/Modules/Wrappers/ApplicationEngine/include/otbWrapperParameter.h
@@ -188,20 +188,6 @@ public:
     return m_ChildrenList;
   }
 
-  /** Store the state of the check box relative to this parameter (TO
-    * BE MOVED to QtWrapper Model )
-    */
-  virtual bool IsChecked() const
-  {
-    return m_IsChecked;
-  }
-
-  /** Modify the state of the checkbox relative to this parameter */
-  virtual void SetChecked(const bool value)
-  {
-    m_IsChecked = value;
-  }
-
 protected:
   /** Constructor */
   Parameter() :
@@ -213,8 +199,7 @@ protected:
     m_UserValue( false ),
     m_UserLevel( UserLevel_Basic ),
     m_Role( Role_Input ),
-    m_Root( this ),
-    m_IsChecked( false )
+    m_Root( this )
   {}
 
   /** Destructor */
@@ -249,9 +234,6 @@ protected:
   /** List of children parameters */
   std::vector<Parameter::Pointer >   m_ChildrenList;
 
-  /** Store the status of the checkbox */
-  bool                               m_IsChecked;
-
 private:
   Parameter(const Parameter &); //purposely not implemented
   void operator =(const Parameter&); //purposely not implemented
diff --git a/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterBase.h b/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterBase.h
index db88ca9ace0243f4a10165b560e26dc2967b4869..86b0eeed42228ed64efe2be8a3e8f9c2af5e6ae9 100644
--- a/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterBase.h
+++ b/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterBase.h
@@ -33,6 +33,8 @@ namespace otb
 namespace Wrapper
 {
 
+class QtWidgetParameterGroup;
+
 /** \class QtWidgetParameterBase
  * \brief
  *
@@ -41,12 +43,26 @@ namespace Wrapper
 class OTBQtWidget_EXPORT QtWidgetParameterBase : public QWidget
 {
   Q_OBJECT
+  friend class QtWidgetParameterGroup;
 public:
   QtWidgetParameterBase( Parameter *, QtWidgetModel * );
   ~QtWidgetParameterBase() ITK_OVERRIDE;
 
   void CreateWidget();
 
+  /** Store the state of the check box relative to this parameter
+    */
+  virtual bool IsChecked() const
+  {
+    return m_IsChecked;
+  }
+
+  /** Modify the state of the checkbox relative to this parameter */
+  virtual void SetChecked(const bool value)
+  {
+    m_IsChecked = value;
+  }
+
 public slots:
   void UpdateGUI();
   virtual void SetActivationState( bool value );
@@ -77,6 +93,9 @@ private:
   QtWidgetModel * m_Model;
 
   Parameter * m_Param;
+
+  /** Store the status of the checkbox */
+  bool m_IsChecked;
 };
 
 
diff --git a/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterGroup.h b/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterGroup.h
index 3e3969739fa821ad30ed26666c5e019e89ea1746..da70434fbf7684fe17fd05c781a9f54bcf50f0ad 100644
--- a/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterGroup.h
+++ b/Modules/Wrappers/QtWidget/include/otbWrapperQtWidgetParameterGroup.h
@@ -59,7 +59,7 @@ private:
 
   void DoUpdateGUI() ITK_OVERRIDE;
 
-  virtual void ProcessChild(Parameter * currentNode, bool status);
+  virtual void ProcessChild(QObject* currentNode, bool status);
 
   ParameterGroup::Pointer m_ParamList;
 
diff --git a/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterBase.cxx b/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterBase.cxx
index eb44e1a4ee8eca304b95e7e52f11a185c2560c0a..86789e4197d67cdf0848b673b9a4508740e4949b 100644
--- a/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterBase.cxx
+++ b/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterBase.cxx
@@ -26,7 +26,9 @@ namespace Wrapper
 {
 
 QtWidgetParameterBase::QtWidgetParameterBase(Parameter * param, QtWidgetModel* m)
-  : m_Model(m), m_Param(param)
+  : m_Model(m)
+  , m_Param(param)
+  , m_IsChecked( false )
 {
 
 }
@@ -89,7 +91,7 @@ void QtWidgetParameterBase::SetActivationState( bool value )
     }
 
   this->setEnabled(value);
-  m_Param->SetChecked(value);
+  this->SetChecked(value);
   m_Param->SetActive(value);
 
 }
diff --git a/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterGroup.cxx b/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterGroup.cxx
index 12af047e282ec56f150656711ba4086c238ea647..b9ba4673cb1049c6ebccfced5e5e13774f5fbdba 100644
--- a/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterGroup.cxx
+++ b/Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetParameterGroup.cxx
@@ -141,10 +141,10 @@ void QtWidgetParameterGroup::DoCreateWidget()
           group->setChecked(false);
 
           // Update iteratively the children status
-          for (unsigned int idx = 0; idx < param->GetChildrenList().size(); ++idx)
+          for (auto child : specificWidget->children())
             {
             // deactivate the children tree
-            this->ProcessChild(param->GetChildrenList()[idx], false);
+            this->ProcessChild(child, false);
             }
           }
         else
@@ -176,33 +176,35 @@ void QtWidgetParameterGroup::SetActivationState( bool value )
   this->setEnabled(value);
 
   // Update iteratively the children status
-  for (unsigned int idx = 0; idx < m_ParamList->GetChildrenList().size(); ++idx)
+  for (auto child : this->children() )
     {
-    this->ProcessChild(m_ParamList->GetChildrenList()[idx], value);
+    this->ProcessChild(child, value);
     }
 }
 
 // Activate iteratively  the children
-void QtWidgetParameterGroup::ProcessChild(Parameter* currentNode, bool status)
+void QtWidgetParameterGroup::ProcessChild(QObject* currentNode, bool status)
 {
   // Activate the current node if it was checked
-  if ( currentNode->IsChecked() && status)
+  QtWidgetParameterBase* widgetBase = dynamic_cast<QtWidgetParameterBase*>(currentNode);
+  if(widgetBase)
     {
-    currentNode->SetActive(status);
-    }
+    if ( widgetBase->IsChecked() && status)
+      {
+      widgetBase->GetParam()->SetActive(status);
+      }
 
-  // If the status is false (deactivating) deactivate all the children
-  // tree
-  if (!status)
-    {
-    currentNode->SetActive(status);
+    // If the status is false (deactivating) deactivate all the children
+    // tree
+    if (!status)
+      {
+      widgetBase->GetParam()->SetActive(status);
+      }
     }
 
-  unsigned int counter = 0;
-  while(counter < currentNode->GetChildrenList().size())
+  for (auto child : currentNode->children() )
     {
-    this->ProcessChild(currentNode->GetChildrenList()[counter], status);
-    ++counter;
+    this->ProcessChild(child, status);
     }
 }