I’m still not sure why you can’t just use a good ol’ searchbox. Here is an example where I have a Tag data type with a field called label and an Article data type that has a field called tags that is a list of tags. I have a group on a page that has a Type of content of Article, and the data source for the group is just the first item in the Article data type. Finally, I have a searchbox in the group, and the searchbox is set up like this.
Note that the box to allow entries not in the list is checked.
I am using two workflows to add a selected tag to the group’s article. The first workflow looks like this.
The second workflow looks like this.
Anyway, that’s what has been in my head this whole time for this thread, and I just got the time to make an example now. Maybe I am still missing the mark here, but if you are simply trying to search for an existing tag or create a new one and add it to an article, what I am showing does exactly that.