diff --git a/visualdev/Tnb.Vengine/AppService/VengineAppService.cs b/visualdev/Tnb.Vengine/AppService/VengineAppService.cs
index 73b86859..b65ec3cb 100644
--- a/visualdev/Tnb.Vengine/AppService/VengineAppService.cs
+++ b/visualdev/Tnb.Vengine/AppService/VengineAppService.cs
@@ -40,7 +40,7 @@ public class VengineAppService : BaseAppService, IVengineAppService
     /// </summary>
     private async Task<Vmodel> GetVmodelAsync(string id)
     {
-        if (_models.ContainsKey(id))
+        if (!_models.ContainsKey(id))
         {
             _models[id] = await _dataAccess.GetVmodelAsync(id, false);
         }
@@ -122,7 +122,7 @@ public class VengineAppService : BaseAppService, IVengineAppService
     private async Task<Vmodel> GetVmodelAsync(string areaCode, string vmCode)
     {
         var key = areaCode + "/" + vmCode;
-        if (_models.ContainsKey(key))
+        if (!_models.ContainsKey(key))
         {
             _models[key] = await _dataAccess.GetVmodelAsync(areaCode, vmCode, false);
         }
diff --git a/visualdev/Tnb.Vengine/AppService/VengineAppServiceT.cs b/visualdev/Tnb.Vengine/AppService/VengineAppServiceT.cs
index 778f6eef..161dc80b 100644
--- a/visualdev/Tnb.Vengine/AppService/VengineAppServiceT.cs
+++ b/visualdev/Tnb.Vengine/AppService/VengineAppServiceT.cs
@@ -57,7 +57,7 @@ public class VengineAppService<TEntity, TGetInput, TGetOutput, TQueryInput, TGet
         }
         if (!string.IsNullOrEmpty(id))
         {
-            if (_models.ContainsKey(id))
+            if (!_models.ContainsKey(id))
             {
                 _models[id] = await _dataAccess.GetVmodelAsync(id, false);
                 //_models[_models[id].fullCode] = _models[id];
@@ -76,7 +76,7 @@ public class VengineAppService<TEntity, TGetInput, TGetOutput, TQueryInput, TGet
                 code = tp.Name.ToKebab();
             }
             var key = area + "/" + code;
-            if (_models.ContainsKey(key))
+            if (!_models.ContainsKey(key))
             {
                 _models[key] = await _dataAccess.GetVmodelAsync(area, code, false);
             }