diff --git a/IOB-WIN/IobSiemens.cs b/IOB-WIN/IobSiemens.cs
index 952458c3..841b8384 100644
--- a/IOB-WIN/IobSiemens.cs
+++ b/IOB-WIN/IobSiemens.cs
@@ -52,6 +52,52 @@ namespace IOB_WIN
 
     #region area metodi lettura/Scrittura
 
+    /// <summary>
+    /// Inserimento/aggiornamento chiavi/valore in currProdData
+    /// </summary>
+    /// <param name="chiave"></param>
+    /// <param name="valore"></param>
+    public void upsertKey(string chiave, string valore)
+    {
+      if (currProdData.ContainsKey(chiave))
+      {
+        currProdData[chiave] = valore;
+      }
+      else
+      {
+        currProdData.Add(chiave, valore);
+      }
+    }
+    /// <summary>
+    /// Converte direttamente un valore stringa su un oggetto byte[] (senza limitazioni di dimensione)
+    /// </summary>
+    /// <param name="valore"></param>
+    /// <param name="maxLenght">Dimensione massima ammessa per la stringa</param>
+    /// <returns></returns>
+    public byte[] stringToByte(string valore, int maxLenght)
+    {
+      byte[] answ = new byte[1];
+      byte[] stringPar = new byte[2];
+      byte[] strByte = S7.Net.Types.String.ToByteArray(valore);
+      int shiftStrByte = writePre ? 2 : 0;
+      int byteLen = strByte.Length <= maxLenght ? strByte.Length : maxLenght;
+      if (writePre)
+      {
+        // tolgo 2 alla lunghezza... SE > 2
+        if (byteLen > 2)
+        {
+          byteLen = byteLen - 2;
+        }
+        // MAX LUN
+        stringPar[1] = (byte)maxLenght;
+        // LUNGH STRING
+        stringPar[0] = (byte)byteLen;
+        Buffer.BlockCopy(stringPar, 0, answ, 0, shiftStrByte);
+      }
+      Buffer.BlockCopy(strByte, 0, answ, shiftStrByte, byteLen);
+      return answ;
+    }
+
     /// <summary>
     /// Salvo in memblock il valore stringa indicato con formattazione siemens
     /// </summary>
@@ -111,22 +157,6 @@ namespace IOB_WIN
       }
     }
 
-    /// <summary>
-    /// Inserimento/aggiornamento chiavi/valore in currProdData
-    /// </summary>
-    /// <param name="chiave"></param>
-    /// <param name="valore"></param>
-    public void upsertKey(string chiave, string valore)
-    {
-      if (currProdData.ContainsKey(chiave))
-      {
-        currProdData[chiave] = valore;
-      }
-      else
-      {
-        currProdData.Add(chiave, valore);
-      }
-    }
     /// <summary>
     /// Salvo in memblock il valore Int indicato con formattazione siemens
     /// </summary>
@@ -1159,7 +1189,14 @@ namespace IOB_WIN
                   saveRealOnMemBlock(ref MemBlock, 0, currMem.value);
                   break;
                 case plcDataType.String:
-                  saveStringOnMemBlock(ref MemBlock, 0, currMem.value.Length, currMem.value);
+                  if (true)
+                  {
+                    saveStringOnMemBlock(ref MemBlock, 0, currMem.size, currMem.value);
+                  }
+                  else
+                  {
+                    MemBlock = stringToByte(currMem.value, currMem.size);
+                  }
                   break;
                 default:
                   break;
diff --git a/Jenkinsfile b/Jenkinsfile
index f3bb33c9..278d5993 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -16,7 +16,7 @@ pipeline {
 
       /* calcolo numero versione... diverso x branch MASTER/DEVELOP */
       script {
-        withEnv(['NEXT_BUILD_NUMBER=520']) {
+        withEnv(['NEXT_BUILD_NUMBER=521']) {
           // env.versionNumber = VersionNumber(versionNumberString : '2.4.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2006-01-01', skipFailedBuilds: true)
           env.versionNumber = VersionNumber(versionNumberString : '2.4.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2006-01-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
           env.APP_NAME = 'MAPO-IOB-WIN'