diff --git a/AppData/ProdLib.cs b/AppData/ProdLib.cs
index bd5b8c3..733973c 100644
--- a/AppData/ProdLib.cs
+++ b/AppData/ProdLib.cs
@@ -1,4 +1,5 @@
-using System;
+using Newtonsoft.Json;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -238,6 +239,26 @@ namespace AppData
         }
       }
     }
+    /// <summary>
+    /// Helper x serializzare l'oggetto
+    /// </summary>
+    /// <param name="currData"></param>
+    /// <returns></returns>
+    public static string serializeTakt(Takt currData)
+    {
+      string answ = JsonConvert.SerializeObject(currData);
+      return answ;
+    }
+    /// <summary>
+    /// Helper x deserializzare l'oggetto
+    /// </summary>
+    /// <param name="rawData"></param>
+    /// <returns></returns>
+    public static Takt deserializeTakt(string rawData)
+    {
+      Takt answ = JsonConvert.DeserializeObject<Takt>(rawData);
+      return answ;
+    }
 
 
     #endregion
diff --git a/NKC_WF/Utility.aspx b/NKC_WF/Utility.aspx
index 8771e49..1aae83a 100644
--- a/NKC_WF/Utility.aspx
+++ b/NKC_WF/Utility.aspx
@@ -13,8 +13,8 @@
         <asp:TextBox runat="server" ID="txtNumStaks" TextMode="Number" />
       </div>
       <div class="col-3">
-        Max Panels per stack:<br />
-        <asp:TextBox runat="server" ID="txtMaxPanels" TextMode="Number" />
+        Num Panels per stack:<br />
+        <asp:TextBox runat="server" ID="txtNumPanels" TextMode="Number" />
       </div>
       <div class="col-3">
         <br />
diff --git a/NKC_WF/Utility.aspx.cs b/NKC_WF/Utility.aspx.cs
index 930bbc9..da1eee9 100644
--- a/NKC_WF/Utility.aspx.cs
+++ b/NKC_WF/Utility.aspx.cs
@@ -17,7 +17,7 @@ namespace NKC_WF
       {
         txtCodTakt.Text = $"{DateTime.Now:yyyyMMdd}.1";
         txtNumStaks.Text = "3";
-        txtMaxPanels.Text = "10";
+        txtNumPanels.Text = "5";
       }
     }
 
@@ -30,15 +30,12 @@ namespace NKC_WF
         return answ;
       }
     }
-    protected int maxNumPanels
+    protected int numPanels
     {
       get
       {
         int answ = 0;
-        Int32.TryParse(txtMaxPanels.Text, out answ);
-        // randomizzo da 1 a max...
-        Random rand = new Random();
-        answ = rand.Next(1, answ);
+        Int32.TryParse(txtNumPanels.Text, out answ);
         return answ;
       }
     }
@@ -59,7 +56,7 @@ namespace NKC_WF
       {
         // devo creare fino a maxNumPanels
         panelList = new List<ProdLib.Panel>();
-        for (int j = 1; j <= maxNumPanels; j++)
+        for (int j = 1; j <= numPanels; j++)
         {
           currMaterial = new ProdLib.MaterialData()
           {
@@ -107,12 +104,14 @@ namespace NKC_WF
         Status = ProdLib.CStatus.Programmed,
         StackList = stackList
       };
-      // salvo serializzato su etichetta
-      string jsonData = JsonConvert.SerializeObject(currTakt);
+      // serializzo 
+      //string jsonData = JsonConvert.SerializeObject(currTakt);
+      string jsonData = ProdLib.serializeTakt(currTakt);
 
+      // scrivo su label
       lblOut.Text = jsonData;
-
       // salvo in redis / DB
+
     }
   }
 }
\ No newline at end of file
diff --git a/NKC_WF/Utility.aspx.designer.cs b/NKC_WF/Utility.aspx.designer.cs
index d5ca84f..6d228ac 100644
--- a/NKC_WF/Utility.aspx.designer.cs
+++ b/NKC_WF/Utility.aspx.designer.cs
@@ -31,13 +31,13 @@ namespace NKC_WF {
         protected global::System.Web.UI.WebControls.TextBox txtNumStaks;
         
         /// <summary>
-        /// Controllo txtMaxPanels.
+        /// Controllo txtNumPanels.
         /// </summary>
         /// <remarks>
         /// Campo generato automaticamente.
         /// Per la modifica, spostare la dichiarazione di campo dal file di progettazione al file code-behind.
         /// </remarks>
-        protected global::System.Web.UI.WebControls.TextBox txtMaxPanels;
+        protected global::System.Web.UI.WebControls.TextBox txtNumPanels;
         
         /// <summary>
         /// Controllo lbtMakeSim.