“Select_” dynamically followed by the name of the category, in your case therefore “{{tag.category.[].fields.name}}”
When the user clicks, you will have to extract the right part of “Select_” to retrieve the category selected by the user.
WARNING:
You are going to say to me “Why the hell not put the name of the category directly in the payload of the button without the “Select_” => because carousel payloads automatically create quick actions. If you start having quick actions with simple names, nothing will happen!!
Let’s resume. As soon as I have extracted the right part and retrieved my category, I trigger my workflow to retrieve the news with the correct category.
In Vizir, you can extract the right part with the extract right API action like this: