diff --git a/doc/private_endpoint_connection_command_guideline.md b/doc/private_endpoint_connection_command_guideline.md
index f64b43661bc..31972e326da 100644
--- a/doc/private_endpoint_connection_command_guideline.md
+++ b/doc/private_endpoint_connection_command_guideline.md
@@ -83,10 +83,10 @@ namespace.name = result['child_name_1']
 del namespace.connection_id
 ```
 #### Transform
-In order to transform the output of the `list` command, we provide a transform function `gen_dict_to_list_transform`.
+In order to transform the output of the `list` command, we provide a transform function `gen_dict_to_list_transform`. The key's value depends on each service's response.
 ```
-from azure.cli.core.command.transform import gen_dict_to_list_transform
-g.command('list', transform=gen_dict_to_list_transform(key='values'))
+from azure.cli.core.commands.transform import gen_dict_to_list_transform
+g.command('list', transform=gen_dict_to_list_transform(key='values')) #  defalut key is `value`
 ```
 
 #### Test