diff --git a/docs/en/tutorials/book-store/part-09.md b/docs/en/tutorials/book-store/part-09.md
index c42dd22d8a..d1c446bc3f 100644
--- a/docs/en/tutorials/book-store/part-09.md
+++ b/docs/en/tutorials/book-store/part-09.md
@@ -677,6 +677,10 @@ export class AuthorComponent implements OnInit {
this.selectedAuthor.birthDate ? new Date(this.selectedAuthor.birthDate) : null,
Validators.required,
],
+ shortBio: [
+ this.selectedAuthor.shortBio ? this.selectedAuthor.shortBio : null,
+ Validators.required,
+ ],
});
}
@@ -768,6 +772,7 @@ Open the `/src/app/author/author.component.html` and replace the content as belo
{%{{{ row.birthDate | date }}}%}
+