MadelineProto/old_docs/API_docs_v70/methods/help_getAppChangelog.md

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---
title: help.getAppChangelog
description: help.getAppChangelog parameters, return type and example
---
## Method: help.getAppChangelog
[Back to methods index](index.md)
### Parameters:
| Name | Type | Required |
|----------|---------------|----------|
|prev\_app\_version|[string](../types/string.md) | Yes|
### Return type: [Updates](../types/Updates.md)
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### Can bots use this method: **NO**
### Example:
```
$MadelineProto = new \danog\MadelineProto\API();
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$MadelineProto->session = 'mySession.madeline';
if (isset($number)) { // Login as a user
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$MadelineProto->phone_login($number);
$code = readline('Enter the code you received: '); // Or do this in two separate steps in an HTTP API
$MadelineProto->complete_phone_login($code);
}
$Updates = $MadelineProto->help->getAppChangelog(['prev_app_version' => 'string', ]);
```
Or, if you're using the [PWRTelegram HTTP API](https://pwrtelegram.xyz):
### As a user:
POST/GET to `https://api.pwrtelegram.xyz/userTOKEN/help.getAppChangelog`
Parameters:
prev_app_version - Json encoded string
Or, if you're into Lua:
```
Updates = help.getAppChangelog({prev_app_version='string', })
```