--- a/Plugins/Samples/Common/DicomPath.h	Thu May 23 12:06:26 2019 +0200
+++ b/Plugins/Samples/Common/DicomPath.h	Tue May 28 07:33:10 2019 +0200
@@ -50,6 +50,8 @@
 
     const Prefix& GetPrefixItem(size_t depth) const;
 
+    Prefix& GetPrefixItem(size_t depth);
+
   public:
     DicomPath(const DicomTag& finalTag) :
     finalTag_(finalTag)
@@ -94,6 +96,12 @@
     {
       return GetPrefixItem(depth).second;
     }
+
+    void SetPrefixIndex(size_t depth,
+                        size_t value)
+    {
+      GetPrefixItem(depth).second = value;
+    }
     
     const DicomTag& GetFinalTag() const
     {