# messages.setHistoryTTL

Set maximum Time-To-Live of all messages in the specified chat

```tl
updatesTooLong#e317af7e = Updates;
updateShortMessage#313bc7f8 flags:# out:flags.1?true mentioned:flags.4?true media_unread:flags.5?true silent:flags.13?true id:int user_id:long message:string pts:int pts_count:int date:int fwd_from:flags.2?MessageFwdHeader via_bot_id:flags.11?long reply_to:flags.3?MessageReplyHeader entities:flags.7?Vector<MessageEntity> ttl_period:flags.25?int = Updates;
updateShortChatMessage#4d6deea5 flags:# out:flags.1?true mentioned:flags.4?true media_unread:flags.5?true silent:flags.13?true id:int from_id:long chat_id:long message:string pts:int pts_count:int date:int fwd_from:flags.2?MessageFwdHeader via_bot_id:flags.11?long reply_to:flags.3?MessageReplyHeader entities:flags.7?Vector<MessageEntity> ttl_period:flags.25?int = Updates;
updateShort#78d4dec1 update:Update date:int = Updates;
updatesCombined#725b04c3 updates:Vector<Update> users:Vector<User> chats:Vector<Chat> date:int seq_start:int seq:int = Updates;
updates#74ae4240 updates:Vector<Update> users:Vector<User> chats:Vector<Chat> date:int seq:int = Updates;
updateShortSentMessage#9015e101 flags:# out:flags.1?true id:int pts:int pts_count:int date:int media:flags.9?MessageMedia entities:flags.7?Vector<MessageEntity> ttl_period:flags.25?int = Updates;
---functions---
messages.setHistoryTTL#b80e5fe4 peer:InputPeer period:int = Updates;
```

### Parameters

| Name | Type | Description |
| --- | :---: | --- |
| **peer** | [InputPeer](/type/InputPeer.md) | The dialog |
| **period** | [int](/type/int.md) | Automatically delete all messages sent in the chat after this many seconds |

### Result
[Updates](/type/Updates.md)

### Only users can use this method

### Possible errors

| Code | Type | Description |
| --- | --- | --- |
| 400 | CHAT\_ADMIN\_REQUIRED | You must be an admin in this chat to do this. |
| 400 | CHAT\_NOT\_MODIFIED | No changes were made to chat information because the new information you passed is identical to the current information. |
| 400 | PEER\_ID\_INVALID | The provided peer id is invalid. |
| 400 | TTL\_PERIOD\_INVALID | The specified TTL period is invalid. |