Can't get google assistant to add item to the "shopping list" (google keep)

So there’s now a new integration with the “google assistant” where you can send google assistant commands like: “turn on kitchen light” or “turn off office light” and that does work for me preaty well (it has some latency, but overall it works).

However, i’m trying to also send some shopping items to my shopping list that is listed in google keep.
When i say the following command to one of my google nests / displays, it works well:

Add something to the shopping list

So i tried to send the same command using the new google assistant service but that doesn’t work.
I don’t know why.

service: google_assistant_sdk.send_text_command
  command: add something to the Shopping List

You ever got that to work?