diff --git a/SingleSpectra.cpp b/SingleSpectra.cpp
index d8da715..801449b 100644
--- a/SingleSpectra.cpp
+++ b/SingleSpectra.cpp
@@ -204,28 +204,39 @@ void SingleSpectra::FillHistograms(){
   // DebugPrint("%s", "SingleSpectra");
   if( !fillHistograms ) return;
 
+  printf("=====================%s\n", __func__);
+
   timespec t0, t1;
 
   QVector<int> randomDigiList = generateNonRepeatedCombination(nDigi);
 
+  // qDebug() << randomDigiList;
+
   for( int i = 0; i < nDigi; i++){
     int ID = randomDigiList[i];
 
     QVector<int> randomChList = generateNonRepeatedCombination(digi[ID]->GetNumInputCh());
 
+    // qDebug() << randomChList;
+
     digiMTX[ID].lock();
+
+    // digi[ID]->GetData()->PrintAllData();
+
     clock_gettime(CLOCK_REALTIME, &t0);
     for( int k = 0; k < digi[ID]->GetNumInputCh(); k ++ ){
       int ch = randomChList[k];
       int lastIndex = digi[ID]->GetData()->GetDataIndex(ch);
+      // printf("--- ch %2d | last index %d \n", ch, lastIndex);
       if( lastIndex < 0 ) continue;
 
       int loopIndex = digi[ID]->GetData()->GetLoopIndex(ch);
 
       int temp1 = lastIndex + loopIndex * digi[ID]->GetData()->GetDataSize();
-      int temp2 = lastFilledIndex[ID][ch] + loopFilledIndex[ID][ch] * digi[ID]->GetData()->GetDataSize();
+      int temp2 = lastFilledIndex[ID][ch] + loopFilledIndex[ID][ch] * digi[ID]->GetData()->GetDataSize() + 1;
+
+      // printf("loopIndx : %d | ID now : %d, ID old : %d \n", loopIndex, temp1, temp2);
 
-      // printf("%d |%d   %d \n", ch, temp2, temp1);
       if( temp1 <= temp2 ) continue;
 
       if( temp1 - temp2 > digi[ID]->GetData()->GetDataSize() ) { //DefaultDataSize = 10k
@@ -233,6 +244,8 @@ void SingleSpectra::FillHistograms(){
         lastFilledIndex[ID][ch] = lastIndex;
         lastFilledIndex[ID][ch] = loopIndex - 1;
       }
+
+      // printf("ch %d | regulated  ID now %d  new %d | last fill idx %d\n", ch, temp2, temp1, lastFilledIndex[ID][ch]);
       
       for( int j = 0 ; j <= temp1 - temp2; j ++){
         lastFilledIndex[ID][ch] ++;
@@ -240,8 +253,13 @@ void SingleSpectra::FillHistograms(){
           lastFilledIndex[ID][ch] = 0;
           loopFilledIndex[ID][ch] ++;
         }
-        hist[ID][ch]->Fill( digi[ID]->GetData()->GetEnergy(ch, lastFilledIndex[ID][ch]));
-        hist2D[ID]->Fill(ch, digi[ID]->GetData()->GetEnergy(ch, lastFilledIndex[ID][ch]));
+
+        uShort data = digi[ID]->GetData()->GetEnergy(ch, lastFilledIndex[ID][ch]);
+
+        // printf(" ch: %d, last fill idx : %d | %d \n", ch, lastFilledIndex[ID][ch], data);
+
+        hist[ID][ch]->Fill( data );
+        hist2D[ID]->Fill(ch, data);
       }
       if( histVisibility[ID][ch]  ) hist[ID][ch]->UpdatePlot();
       if( hist2DVisibility[ID] ) hist2D[ID]->UpdatePlot();