Error sending DM with media attachment using Twitter API in Java

[MohanKanjula]

Hey , I am trying to reply to a DM with a media attached . So I am using this method in the Library
PostDmResponse postDmResponse = twitterClient.createUserDmConversation("participant_id", dmMessage);

I am building dmMessage object like this

String templateAttachments= "[{\"media_id\": \"%s\"}]"; String attachments = String.format(templateAttachments,mediaId); DmParameters.DmMessage dmMessage = DmParameters.DmMessage.builder().text("Testing DM with an Image ").attachments(attachments).build() ; PostDmResponse postDmResponse = twitterClient.createUserDmConversation("participant_id", dmMessage);

It is giving me this errror
[main] ERROR io.github.redouane59.twitter.helpers.AbstractRequestHelper - (POST) Error calling https://api.twitter.com/2/dm_conversations/with/864922074502049793/messages {"errors":[{"parameters":{"$.attachments":["\"[{\\\"media_id\\\":\\\"1647942759276326912\\\"}]\""]},"message":"$.attachments: string found, array expected"}],"title":"Invalid Request","detail":"One or more parameters to your request was invalid.","type":"https://api.twitter.com/2/problems/invalid-request"} - 400

As I checked the official twitter API documentation , there attachments is an array of json objects
{"text": "Sending a DM with media!", "attachments": [{"media_id": "1455952740635586573"}]

So in which format should we send the attachment String here ? can you help me with this?

[AlanNun08]

I am using java and I am having the same issues with twittered

[AlanNun08]

however the issues relies with posting a tweet with a media object