diff --git a/src/Gemstone.Web/APIController/ReadOnlyModelController.cs b/src/Gemstone.Web/APIController/ReadOnlyModelController.cs
index f681826e..b2d9e113 100644
--- a/src/Gemstone.Web/APIController/ReadOnlyModelController.cs
+++ b/src/Gemstone.Web/APIController/ReadOnlyModelController.cs
@@ -337,12 +337,12 @@ public virtual async Task<IActionResult> Search([FromBody] SearchPost<T> postDat
 
             if (ParentKey != string.Empty && parentID is not null)
             {
-                filters.Append(new RecordFilter<T>()
+                filters = filters.Append(new RecordFilter<T>()
                 {
                     FieldName = ParentKey,
                     Operator = "=",
                     SearchParameter = parentID
-                });
+                }).ToArray();
             }
 
             IAsyncEnumerable<T> result = tableOperations.QueryRecordsAsync(HttpContext.User, postData.OrderBy, postData.Ascending, page, PageSize, cancellationToken, filters);
@@ -367,12 +367,12 @@ public virtual async Task<IActionResult> GetPageInfo([FromBody] SearchPost<T> po
 
             if (ParentKey != string.Empty && parentID is not null)
             {
-                filters.Append(new RecordFilter<T>()
+                filters = filters.Append(new RecordFilter<T>()
                 {
                     FieldName = ParentKey,
                     Operator = "=",
                     SearchParameter = parentID
-                });
+                }).ToArray();
             }
 
             int recordCount = await tableOperations.QueryRecordCountAsync(HttpContext.User, cancellationToken, filters).ConfigureAwait(false);
@@ -401,12 +401,12 @@ public virtual async Task<IActionResult> GetPageInfo(string? parentID, Cancellat
 
             if (ParentKey != string.Empty && parentID is not null)
             {
-                filters.Append(new RecordFilter<T>()
+                filters = filters.Append(new RecordFilter<T>()
                 {
                     FieldName = ParentKey,
                     Operator = "=",
                     SearchParameter = parentID
-                });
+                }).ToArray();
             }
 
             int recordCount = await tableOperations.QueryRecordCountAsync(HttpContext.User, cancellationToken, filters).ConfigureAwait(false);