Webhooks, triggered groups behavior

Hi,

The intended behavior that I am after is firing the webhook when a new topic gets posted to a private message with a specific group as the recipient.

I thought I would be able to achieve this by checking “topic is created” and specifying the group I wanted, but it doesn’t seem to fire.

I would assume I am interpreting this incorrectly as a result, but Chat Integrations does let you fire a webhook based on private messages sent. (I would even choose to use this, only the packet that gets sent is not useful to me (for Discord, in an embed).)

Is there some other way to get the behavior I want or am I out of luck?