diff --git a/WebDoorCreator.UI/Components/DoorDef/BaseParamList.razor.cs b/WebDoorCreator.UI/Components/DoorDef/BaseParamList.razor.cs
index 7c63b62..1d3b2c5 100644
--- a/WebDoorCreator.UI/Components/DoorDef/BaseParamList.razor.cs
+++ b/WebDoorCreator.UI/Components/DoorDef/BaseParamList.razor.cs
@@ -14,6 +14,9 @@ namespace WebDoorCreator.UI.Components.DoorDef
         [Parameter]
         public List<DoorOpModel>? CurrBaseDoorOp { get; set; } = null;
 
+        [Parameter]
+        public EventCallback<List<DoorOpModel>> E_DoorOps2Mod { get; set; }
+
         [Inject]
         protected WebDoorCreatorService WDService { get; set; } = null!;
 
@@ -32,14 +35,20 @@ namespace WebDoorCreator.UI.Components.DoorDef
             if (savingDoorOp != null)
             {
                 paramsChanged = true;
-                DoorOp2Save = savingDoorOp;
-                await doSaveDoorOp();
+                var doorOp2Rem = DoorOp2Save.Where(x => x.DoorOpId == savingDoorOp.DoorOpId).FirstOrDefault();
+                if (doorOp2Rem != null)
+                {
+                    DoorOp2Save.Remove(doorOp2Rem);
+                }
+                DoorOp2Save.Add(savingDoorOp);
+                //await doSaveDoorOp();
+                StateHasChanged();
             }
         }
 
         protected async Task doSaveDoorOp()
         {
-            if(DoorOp2Save != null)
+            if (DoorOp2Save != null)
             {
                 var done = await WDService.DoorOpUpdate(DoorOp2Save);
                 if (done)
@@ -53,7 +62,7 @@ namespace WebDoorCreator.UI.Components.DoorDef
 
 
         protected bool paramsChanged { get; set; } = false;
-        protected DoorOpModel? DoorOp2Save { get; set; }
+        protected List<DoorOpModel> DoorOp2Save { get; set; } = new List<DoorOpModel>();
 
         #endregion Protected Properties
     }
diff --git a/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs b/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs
index fd2d7a3..38acc6e 100644
--- a/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs
+++ b/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs
@@ -151,7 +151,10 @@ namespace WebDoorCreator.UI.Components.Hardware
         {
             DoorOpInst.userConfirm = userId;
             DoorOpInst.DtConfirm = DateTime.Now;
-            await WDCService.DoorOpUpdate(DoorOpInst);
+
+            var doorOps2Save = new List<DoorOpModel>() { DoorOpInst };
+
+            await WDCService.DoorOpUpdate(doorOps2Save);
             // salvo i NUOVI valori...
             DoorOpInst.CurrVals = currVal;
             DoorOpInst.GraphicParams = graphicParams;
@@ -176,7 +179,8 @@ namespace WebDoorCreator.UI.Components.Hardware
             DoorOpInst.CurrVals = currVal;
             DoorOpInst.GraphicParams = graphicParams;
             // salvo!
-            await WDCService.DoorOpUpdate(DoorOpInst);
+            var doorOps2Save = new List<DoorOpModel>() { DoorOpInst };
+            await WDCService.DoorOpUpdate(doorOps2Save);
             // invio msg dato "salvabile"
             // rileggo
             await FullReloadData();