From dfdd7690769a5170236824dfabc1022579e6ad34 Mon Sep 17 00:00:00 2001
From: Greg Nazario <greg@gnazar.io>
Date: Tue, 17 Jun 2025 13:50:50 -0400
Subject: [PATCH] Update digital-asset.mdx

Update move syntax to use string::utf8
---
 .../build/smart-contracts/digital-asset.mdx   | 39 +++++++++++--------
 1 file changed, 22 insertions(+), 17 deletions(-)

diff --git a/apps/nextra/pages/en/build/smart-contracts/digital-asset.mdx b/apps/nextra/pages/en/build/smart-contracts/digital-asset.mdx
index 4b277d437..53d3e59ac 100644
--- a/apps/nextra/pages/en/build/smart-contracts/digital-asset.mdx
+++ b/apps/nextra/pages/en/build/smart-contracts/digital-asset.mdx
@@ -60,6 +60,7 @@ To make a `Collection` with a fixed supply you can use `collection::create_fixed
 ```move filename="example.move"
 use aptos_token_objects::collection;
 use std::option::{Self, Option};
+use aptos_framework::string;
 
 public entry fun create_collection(creator: &signer) {
     let max_supply = 1000;
@@ -68,11 +69,11 @@ public entry fun create_collection(creator: &signer) {
     // Maximum supply cannot be changed after collection creation
     collection::create_fixed_collection(
         creator,
-        "My Collection Description",
+        string::utf8(b"My Collection Description"),
         max_supply,
-        "My Collection",
+        string::utf8(b"My Collection"),
         royalty,
-        "https://mycollection.com",
+        string::utf8(b"https://mycollection.com"),
     );
 }
 ```
@@ -82,16 +83,17 @@ To create a `Collection` with unlimited supply you can use `collection::create_u
 
 ```move filename="example.move"
 use std::option::{Self, Option};
+use aptos_framework::string;
 
 public entry fun create_collection(creator: &signer) {
     let royalty = option::none();
 
     collection::create_unlimited_collection(
         creator,
-        "My Collection Description",
-        "My Collection",
+        string::utf8(b"My Collection Description"),
+        string::utf8(b"My Collection"),
         royalty,
-        "https://mycollection.com",
+        string::utf8(b"https://mycollection.com"),
     );
 }
 ```
@@ -106,15 +108,16 @@ Since each `Collection` is a [Move Object](objects.mdx), you can customize it by
 
 ```move filename="example.move"
 use std::option::{Self, Option};
+use aptos_framework::string;
 
 public entry fun create_collection(creator: &signer) {
     let royalty = option::none();
     let collection_constructor_ref = &collection::create_unlimited_collection(
         creator,
-        "My Collection Description",
-        "My Collection",
+        string::utf8(b"My Collection Description"),
+        string::utf8(b"My Collection"),
         royalty,
-        "https://mycollection.com",
+        string::utf8(b"https://mycollection.com"),
     );
     let mutator_ref = collection::get_mutator_ref(collection_constructor_ref);
     // Store the mutator ref somewhere safe
@@ -129,6 +132,7 @@ You can further customize your `Collection` by adding more resources or function
 
 ```move filename="example.move"
 use std::option::{Self, Option};
+use aptos_framework::string;
 
 struct MyCollectionMetadata has key {
     creation_timestamp_secs: u64,
@@ -139,11 +143,11 @@ public entry fun create_collection(creator: &signer) {
     // Constructor ref is a non-storable struct returned when creating a new object.
     // It can generate an object signer to add resources to the collection object.
     let collection_constructor_ref = &collection::create_unlimited_collection(
-        creator,
-        "My Collection Description",
-        "My Collection",
+creator,
+        string::utf8(b"My Collection Description"),
+        string::utf8(b"My Collection"),
         royalty,
-        "https://mycollection.com",
+        string::utf8(b"https://mycollection.com"),
     );
     // Constructor ref can be exchanged for signer to add resources to the collection object.
     let collection_signer = &object::generate_signer(collection_constructor_ref);
@@ -194,16 +198,17 @@ You can derive the address for named tokens by:
 ```move filename="example.move"
 use aptos_token_objects::token;
 use std::option::{Self, Option};
+use aptos_framework::string;
 
 public entry fun mint_token(creator: &signer) {
     let royalty = option::none();
     token::create(
         creator,
-        "Collection Name",
-        "Description",
-        "Token Name",
+        string::utf8(b"Collection Name"),
+        string::utf8(b"Description"),
+        string::utf8(b"Token Name"),
         royalty,
-        "https://mycollection.com/my-named-token.jpeg",
+        string::utf8(b"https://mycollection.com/my-named-token.jpeg"),
     );
 }
 ```