diff --git a/system/Tnb.Systems/System/DataInterfaceService.cs b/system/Tnb.Systems/System/DataInterfaceService.cs
index 4b650ea7..089b0f2e 100644
--- a/system/Tnb.Systems/System/DataInterfaceService.cs
+++ b/system/Tnb.Systems/System/DataInterfaceService.cs
@@ -624,6 +624,11 @@ public class DataInterfaceService : IDataInterfaceService, IDynamicApiController
                 PageResult<Dictionary<string, object>> page = JsonConvert.DeserializeObject<PageResult<Dictionary<string, object>>>(JsonConvert.SerializeObject(result));
                 return page.list.FirstOrDefault()?.Keys.ToList() ?? Enumerable.Empty<string>();
             }
+            if (result is DataTable)
+            {
+                List<Dictionary<string, Object>> list = JsonConvert.DeserializeObject<List<Dictionary<string, object>>>(JsonConvert.SerializeObject(result));
+                return list.FirstOrDefault()?.Keys.ToList() ?? Enumerable.Empty<string>();
+            }
             else
             {
                 return Enumerable.Empty<string>();