diff --git a/parameter/ParameterAccessContext.h b/parameter/ParameterAccessContext.h
index af6f1b7..11c0fdc 100644
--- a/parameter/ParameterAccessContext.h
+++ b/parameter/ParameterAccessContext.h
@@ -37,7 +37,7 @@
 class CParameterAccessContext : public CErrorContext
 {
 public:
-    CParameterAccessContext(string& strError, CParameterBlackboard* pParameterBlackboard, bool bValueSpaceIsRaw, bool bOutputRawFormatIsHex);
+    CParameterAccessContext(string& strError, CParameterBlackboard* pParameterBlackboard, bool bValueSpaceIsRaw, bool bOutputRawFormatIsHex = false);
     CParameterAccessContext(string& strError);
 
     // ParameterBlackboard
diff --git a/parameter/ParameterMgr.cpp b/parameter/ParameterMgr.cpp
index 83867d5..61e204a 100644
--- a/parameter/ParameterMgr.cpp
+++ b/parameter/ParameterMgr.cpp
@@ -1652,31 +1652,14 @@
 {
     CPathNavigator pathNavigator(strPath);
 
-    if (!pathNavigator.isPathValid()) {
-
-        strError = "Path not well formed";
-
-        return false;
-    }
-
-    string* pStrChildName = pathNavigator.next();
-
-    if (!pStrChildName) {
-
-        strError = "Non settable element";
-
-        return false;
-    }
-
-    if (*pStrChildName != getSystemClass()->getName()) {
-
-        strError = "Path not found";
+    // Nagivate through system class
+    if (!pathNavigator.navigateThrough(getSystemClass()->getName(), strError)) {
 
         return false;
     }
 
     // Define context
-    CParameterAccessContext parameterAccessContext(strError, _pMainParameterBlackboard, bRawValueSpace, false);
+    CParameterAccessContext parameterAccessContext(strError, _pMainParameterBlackboard, bRawValueSpace);
 
     // Set auto sync
     parameterAccessContext.setAutoSync(_bAutoSyncOn);
@@ -1692,25 +1675,8 @@
 {
     CPathNavigator pathNavigator(strPath);
 
-    if (!pathNavigator.isPathValid()) {
-
-        strError = "Path not well formed";
-
-        return false;
-    }
-
-    string* pStrChildName = pathNavigator.next();
-
-    if (!pStrChildName) {
-
-        strError = "Non settable element";
-
-        return false;
-    }
-
-    if (*pStrChildName != getConstSystemClass()->getName()) {
-
-        strError = "Path not found";
+    // Nagivate through system class
+    if (!pathNavigator.navigateThrough(getConstSystemClass()->getName(), strError)) {
 
         return false;
     }
diff --git a/parameter/PathNavigator.cpp b/parameter/PathNavigator.cpp
index 1911002..cb6bec3 100644
--- a/parameter/PathNavigator.cpp
+++ b/parameter/PathNavigator.cpp
@@ -50,6 +50,35 @@
     return _bValid;
 }
 
+// Navigate through
+bool CPathNavigator::navigateThrough(const string& strItemName, string& strError)
+{
+    if (!_bValid) {
+
+        strError = "Path not well formed";
+
+        return false;
+    }
+
+    string* pStrChildName = next();
+
+    if (!pStrChildName) {
+
+        strError = "Path not complete";
+
+        return false;
+    }
+
+    if (*pStrChildName != strItemName) {
+
+        strError = "Path not found";
+
+        return false;
+    }
+
+    return true;
+}
+
 string* CPathNavigator::next()
 {
     if (_uiCurrentIndex < _astrItems.size()) {
diff --git a/parameter/PathNavigator.h b/parameter/PathNavigator.h
index ae3a901..c7f637a 100644
--- a/parameter/PathNavigator.h
+++ b/parameter/PathNavigator.h
@@ -41,10 +41,16 @@
 public:
     CPathNavigator(const string& strPath);
 
+    // Path validity
     bool isPathValid() const;
 
+    // Navigate through
+    bool navigateThrough(const string& strItemName, string& strError);
+
+    // Nagivate
     string* next();
 
+    // Current path
     string getCurrentPath() const;
 
 private: