diff --git a/app/client/models/DataTableModelWithDiff.ts b/app/client/models/DataTableModelWithDiff.ts
index a867dba2..1459a71e 100644
--- a/app/client/models/DataTableModelWithDiff.ts
+++ b/app/client/models/DataTableModelWithDiff.ts
@@ -261,6 +261,10 @@ export class TableDataWithDiff {
     return this.core.getValue(rowId, colId);
   }
   public get tableId() { return this.core.tableId; }
+
+  public numRecords() {
+    return this.core.numRecords();
+  }
 }
 
 /**