diff --git a/MMVII/include/MMVII_nums.h b/MMVII/include/MMVII_nums.h
index 2d5f504d8c..e68148faa6 100755
--- a/MMVII/include/MMVII_nums.h
+++ b/MMVII/include/MMVII_nums.h
@@ -902,7 +902,8 @@ class cCelCC : public cMemCheck
      public :
         std::vector<size_t>  mEquivCode;  /// all codes equivalent
         size_t               mLowCode;    ///< lower representant
-        bool                 mTmp;        /// some marker to use when convenient
+        bool                 mTmp;        ///< some marker to use when convenient
+        int                  mNum;        ///< Num used so that names is alway the same whatever maybe the selection
 
 	size_t HammingDist(const cCelCC &) const;
 
@@ -930,6 +931,7 @@ class cCompEquiCodes : public cMemCheck
        const std::vector<cCelCC*>  & VecOfCells() const; ///< Accessor
        const cCelCC &  CellOfCodeOK(size_t aCode) const;  ///< Error if null
        const cCelCC *  CellOfCode(size_t) const;  ///< nullptr if bad range or no cell
+       cCelCC *  CellOfCode(size_t) ;  ///< nullptr if bad range or no cell
 
        ~cCompEquiCodes();
        static void Bench(size_t aNBB,size_t aPer,bool Miror);
diff --git a/MMVII/src/CodedTarget/cGenerateEncoding.cpp b/MMVII/src/CodedTarget/cGenerateEncoding.cpp
index 98681c6fa9..4647494398 100755
--- a/MMVII/src/CodedTarget/cGenerateEncoding.cpp
+++ b/MMVII/src/CodedTarget/cGenerateEncoding.cpp
@@ -427,7 +427,8 @@ int  cAppliGenerateEncoding::Exe()
 
           for (size_t aK=0 ; aK<aVCode.size(); aK++)
 	  {
-		 const cCelCC * aCel = mCEC->CellOfCode(aVCode[aK].y());
+		 cCelCC * aCel = mCEC->CellOfCode(aVCode[aK].y());
+                 aCel->mNum = aVCode[aK].x();
                  MMVII_INTERNAL_ASSERT_bench(aCel!=0,"CellOfCode in3D AICON");
                  MMVII_INTERNAL_ASSERT_bench(aVCode[aK].y()==(int)aCel->mLowCode,"CellOfCode in3D AICON");
 	  }
@@ -539,6 +540,9 @@ int  cAppliGenerateEncoding::Exe()
        for (size_t aK1=0 ; aK1<mVOC.size(); aK1++)  
        {
            size_t aNum = aK1 + Num000;
+// StdOut() << "NNNNNnnN= " << aNum  << " " << mVOC[aK1]->mNum << "\n";
+           MMVII_INTERNAL_ASSERT_strong(mVOC[aK1]->mNum>=0,"Num was not correctly set in cCelCC");
+           aNum = mVOC[aK1]->mNum;
 	   size_t aCode = mVOC[aK1]->mLowCode;
            aBE.AddOneEncoding(aNum,aCode);  // add a new encoding
 
diff --git a/MMVII/src/UtiMaths/bitcoding.cpp b/MMVII/src/UtiMaths/bitcoding.cpp
index ce705356b9..c2b63ac9ae 100755
--- a/MMVII/src/UtiMaths/bitcoding.cpp
+++ b/MMVII/src/UtiMaths/bitcoding.cpp
@@ -227,7 +227,8 @@ size_t MaxRun2Length(tU_INT4 aVal,size_t aPow2)
 /* *************************** */
 
 cCelCC::cCelCC(size_t aLowestCode) :
-    mLowCode       (aLowestCode)
+    mLowCode       (aLowestCode),
+    mNum           (-1)
 {
 }
 
@@ -257,7 +258,7 @@ size_t cCelCC::HammingDist(const cCelCC & aC2) const
 cCompEquiCodes::cCompEquiCodes(size_t aNbBits,size_t aPer,bool WithMirror) :
      mNbBits       (aNbBits),
      mPeriod       (aPer),
-    mNbCodeUC     (size_t(1)<<mNbBits),
+     mNbCodeUC     (size_t(1)<<mNbBits),
      mVCodes2Cell  (mNbCodeUC,nullptr)
 {
      MMVII_INTERNAL_ASSERT_strong((aNbBits%aPer)==0,"NbBit not multiple of period in cCompEquiCodes");
@@ -266,6 +267,7 @@ cCompEquiCodes::cCompEquiCodes(size_t aNbBits,size_t aPer,bool WithMirror) :
           if (mVCodes2Cell[aCode] == nullptr)
 	  {
               cCelCC * aNewCel = new cCelCC(aCode);
+              aNewCel->mNum = mVecOfCells.size();
 	      mVecOfCells.push_back(aNewCel);
 
 	      AddCodeWithPermCirc(aCode,aNewCel);
@@ -314,10 +316,14 @@ const cCelCC &  cCompEquiCodes::CellOfCodeOK(size_t aCode) const
 const cCelCC *  cCompEquiCodes::CellOfCode(size_t aCode) const
 {
    if (aCode>=mVCodes2Cell.size()) return nullptr;
-
    return  mVCodes2Cell.at(aCode);
 }
 
+cCelCC *  cCompEquiCodes::CellOfCode(size_t aCode) 
+{
+   if (aCode>=mVCodes2Cell.size()) return nullptr;
+   return  mVCodes2Cell.at(aCode);
+}
 
 
 void cCompEquiCodes::AddCodeWithPermCirc(size_t aCode,cCelCC * aNewCel)