diff --git a/MP.SPEC/Components/DossiersFilter.razor b/MP.SPEC/Components/DossiersFilter.razor
index 906f5c56..f62d936c 100644
--- a/MP.SPEC/Components/DossiersFilter.razor
+++ b/MP.SPEC/Components/DossiersFilter.razor
@@ -18,8 +18,8 @@
                             }
                         }
                     </select>
-                    <label class="input-group-text" for="DtRef" title="Selezionare la data da visualizzare"><i class="fa-solid fa-calendar-check"></i></label>
-                    <input @bind="@selDtRef" id="DtRef" class="form-control" type="datetime-local" title="Selezionare la data da visualizzare" />
+                    <label class="input-group-text" for="DtMin" title="Selezionare la data da visualizzare"><i class="fa-solid fa-calendar-check"></i></label>
+                    <input @bind="@selDtRef" id="DtMin" class="form-control" type="datetime-local" title="Selezionare la data minima da visualizzare" />
                 </div>
             </div>
         </div>
diff --git a/MP.SPEC/Components/DossiersFilter.razor.cs b/MP.SPEC/Components/DossiersFilter.razor.cs
index eefd1f4f..2ae4b100 100644
--- a/MP.SPEC/Components/DossiersFilter.razor.cs
+++ b/MP.SPEC/Components/DossiersFilter.razor.cs
@@ -37,6 +37,7 @@ namespace MP.SPEC.Components
                 }
             }
         }
+        
 
         protected string selMacchina
         {
diff --git a/MP.SPEC/Components/ParamsFilter.razor.cs b/MP.SPEC/Components/ParamsFilter.razor.cs
index 454b7827..f2989711 100644
--- a/MP.SPEC/Components/ParamsFilter.razor.cs
+++ b/MP.SPEC/Components/ParamsFilter.razor.cs
@@ -201,10 +201,12 @@ namespace MP.SPEC.Components
             // fermo udpate
             liveUpdate = false;
             // se non ho data rif uso adesso...
-            DateTime dtRif = SelFilter.dtRif == null ? DateTime.Now : (DateTime)SelFilter.dtRif;
+            DateTime dtMax = SelFilter.dtMax == null ? DateTime.Now : (DateTime)SelFilter.dtMax;
+            DateTime dtMin = SelFilter.dtMin == null ? DateTime.Now : (DateTime)SelFilter.dtMin;
             // aggiungo 2 sec
-            dtRif = dtRif.AddSeconds(1);
-            await MDService.DossiersTakeParamsSnapshot(selMacchina, 10, dtRif);
+            dtMax = dtMax.AddSeconds(15);
+            dtMin = dtMin.AddMinutes(-30);
+            await MDService.DossiersTakeParamsSnapshotLast(selMacchina, dtMin, dtMax);
             lastUpdate = $"{DateTime.Now:yyyy/MM/dd HH:mm:ss}";
         }
 
@@ -261,6 +263,25 @@ namespace MP.SPEC.Components
                 }
             }
         }
+        private DateTime? dtMin
+        {
+            get => SelFilter.dtMin;
+            set
+            {
+                if (SelFilter.dtMin != value)
+                {
+                    // copio il filtro
+                    var currFilt = SelFilter;
+                    // fermo update
+                    currFilt.LiveUpdate = false;
+                    currFilt.CurrPage = 0;
+                    currFilt.lastUpdate = $"{DateTime.Now:yyyy/MM/dd HH:mm:ss}";
+                    currFilt.dtMin = value;
+                    SelFilter = currFilt;
+                    reportChange();
+                }
+            }
+        }
 
         [Inject]
         private NavigationManager NavManager { get; set; } = null!;
diff --git a/MP.SPEC/Data/MpDataService.cs b/MP.SPEC/Data/MpDataService.cs
index 7210a2a1..ab2d312b 100644
--- a/MP.SPEC/Data/MpDataService.cs
+++ b/MP.SPEC/Data/MpDataService.cs
@@ -368,6 +368,27 @@ namespace MP.SPEC.Data
             redisDb.StringSet(currKey, "", TimeSpan.FromSeconds(1));
             return answ;
         }
+        
+        /// <summary>
+        /// Effettua salvataggio snapshot parametri (con stored) + svuota eventuale cache redis
+        /// </summary>
+        /// <param name="IdxMacchina">macchina</param>
+        /// <param name="MaxSec">NUm massimo secondi per recuperare dati correnti</param>
+        /// <param name="DtRif">DataOra riferimento x cui prendere valori antecedenti</param>
+        /// <returns></returns>
+        public async Task<bool> DossiersTakeParamsSnapshotLast(string IdxMacchina, DateTime dtMin, DateTime dtMax)
+        {
+            bool answ = false;
+            await Task.Delay(1);
+            // chiamo stored x salvare parametri
+            dbController.DossiersTakeParamsSnapshotLast(IdxMacchina, dtMin, dtMax);
+            // svuoto cache redis x macchina
+            string currKey = $"{redisDossByMac}:{IdxMacchina}";
+            redisDb.StringSet(currKey, "", TimeSpan.FromSeconds(1));
+            currKey = $"{redisDossByMac}:*";
+            redisDb.StringSet(currKey, "", TimeSpan.FromSeconds(1));
+            return answ;
+        }
 
         /// <summary>
         /// Restitusice elenco aziende
diff --git a/MP.SPEC/Data/SelectFluxParams.cs b/MP.SPEC/Data/SelectFluxParams.cs
index 4f416c7a..bf17616f 100644
--- a/MP.SPEC/Data/SelectFluxParams.cs
+++ b/MP.SPEC/Data/SelectFluxParams.cs
@@ -15,6 +15,7 @@
         public int CurrPage { get; set; } = 1;
         public DateTime? dtRif { get; set; } = null;
         public DateTime? dtMax { get; set; } = null;
+        public DateTime? dtMin { get; set; } = null;
         public string IdxMacchina { get; set; } = "*";
         public string lastUpdate { get; set; } = "-";
         public bool LiveUpdate { get; set; } = true;
diff --git a/MP.SPEC/MP.SPEC.csproj b/MP.SPEC/MP.SPEC.csproj
index 1a5d061f..0a551df9 100644
--- a/MP.SPEC/MP.SPEC.csproj
+++ b/MP.SPEC/MP.SPEC.csproj
@@ -5,7 +5,7 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <RootNamespace>MP.SPEC</RootNamespace>
-    <Version>6.16.2209.2716</Version>
+    <Version>6.16.2209.2717</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/MP.SPEC/Resources/ChangeLog.html b/MP.SPEC/Resources/ChangeLog.html
index 55703e20..a728c15a 100644
--- a/MP.SPEC/Resources/ChangeLog.html
+++ b/MP.SPEC/Resources/ChangeLog.html
@@ -1,6 +1,6 @@
 <body>
     <i>Modulo MAPOSPEC </i>
-    <h4>Versione: 6.16.2209.2716</h4>
+    <h4>Versione: 6.16.2209.2717</h4>
     <br /> Note di rilascio:
     <ul>
         <li>
diff --git a/MP.SPEC/Resources/VersNum.txt b/MP.SPEC/Resources/VersNum.txt
index c950d49c..4d19dd32 100644
--- a/MP.SPEC/Resources/VersNum.txt
+++ b/MP.SPEC/Resources/VersNum.txt
@@ -1 +1 @@
-6.16.2209.2716
+6.16.2209.2717
diff --git a/MP.SPEC/Resources/manifest.xml b/MP.SPEC/Resources/manifest.xml
index e107bb05..f797a793 100644
--- a/MP.SPEC/Resources/manifest.xml
+++ b/MP.SPEC/Resources/manifest.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <item>
-  <version>6.16.2209.2716</version>
+  <version>6.16.2209.2717</version>
   <url>https://nexus.steamware.net/repository/SWS/MP-SPEC/stable/LAST/MP.SPEC.zip</url>
   <changelog>https://nexus.steamware.net/repository/SWS/MP-SPEC/stable/LAST/ChangeLog.html</changelog>
   <mandatory>false</mandatory>