Talk API - send image with preview

[nextGeko]

I use a chat to be informed when a movement is detected on one of the cams controlled by my home automation system.
When a movement is detected, I first upload an Image where the movement was detected with:

curl -X PUT -u user:pw https://NEXTCLOUD/remote.php/dav/files/USER/Unifi-EVA/detection.png -T /media/picture/lastDetection.png

After uploading the file I share it in the particular chat with:

curl -H “Content-Type: application/json” -H “Accept: application/json” -H “OCS-APIRequest: true” -d ‘{“shareWith”:“chatID”,“shareType”:10,“path”:“/detection.png”}’ https://NEXTCLOUD/ocs/v2.php/apps/files_sharing/api/v1/shares

It works quite good however the image posted in the chat does not apear with a small thumbnail only a standard paceholder is used.
How can I upload the image to the chat with a preview?

Thx
Andy

[SysKeeper]

Hey, what happens if you reload the conversation? Is the preview shown then?
Also, what happens if you manually upload the same image, does the preview work then?

[SysKeeper]

https://nextcloud-talk.readthedocs.io/en/latest/chat/#share-a-file-to-the-chat

Can’t check right now, but shouldn’t there be a talkMetaData entry ?

[nextGeko]

hmm reloading helps you’re right strange maybe my browser needs a restart, thx