diff --git a/examples/sheets/SmartDateSheet.ts b/examples/sheets/SmartDateSheet.ts
index 3bdbdae..d94ced9 100644
--- a/examples/sheets/SmartDateSheet.ts
+++ b/examples/sheets/SmartDateSheet.ts
@@ -1,3 +1,8 @@
+import _ from 'lodash'
+import {
+  FlatfileRecord,
+} from '@flatfile/hooks'
+
 import {
   Portal,
   Sheet,
@@ -14,17 +19,28 @@ import {SmartDateField } from '../fields/SmartDateField'
  *
  * This sheet combined with sample-uploads shows how SmartDateField handles a variety of date formats
  */
-const DateSheet = new Sheet('DateSheet', {
-  fstring: TextField(),
-  raw_date: TextField(),
-  base_date: SmartDateField({}),
-  en_date: SmartDateField({locale:'en'}),
-  Fr_date: SmartDateField({locale:'fr'}),
-  Nl_date: SmartDateField({locale:'nl'}),
-  Ru_date: SmartDateField({locale:'ru'}),
-  De_date: SmartDateField({locale:'de'}),
-  descriptions: TextField()
-})
+const DateSheet = new Sheet(
+  'DateSheet',
+  {
+    fstring: TextField(),
+    raw_date: TextField(),
+    base_date: SmartDateField({}),
+    en_date: SmartDateField({locale:'en', formatString:'yyyy-MM-dd'}),
+    Fr_date: SmartDateField({locale:'fr'}),
+    Nl_date: SmartDateField({locale:'nl'}),
+    Ru_date: SmartDateField({locale:'ru'}),
+    De_date: SmartDateField({locale:'de'}),
+    descriptions: TextField()
+  },
+  {
+    recordCompute: (rec:FlatfileRecord) => {
+
+      if(!_.isEqual(rec.get('base_date'), rec.get('en_date'))) {
+	rec.pushInfoMessage('en_date', 'Not equal to base_date', 'error', 'other')
+      }
+    }
+  }
+)
 
 /**
  * Portals