I would like to use helm to select tags for my headings,

and I'm having a tough time getting something to work.

I would like the following behavior:

1) org-set-tags-command would show a list of all tags

in my agenda files using the helm interface

2) I could set one tag for each call to org-set-tags-command.  I've 

seen posts that want to be able to multi-select tags, but I don't want to

over-complicate things.

Currently, I'm using helm-core 2019-05-27 and org-mode

9.2.3

I have this set:

org-set-tags-command works fine if a headline does *not* have a tag.  I get helm

mode with all of the tags from my agenda-files shown.  However, after I assign

a tag to a headline, I no longer see the list of tags when I call org-set-tags-command.  Instead I see: "Tags: :currtag:" prompt and no suggestions from helm.  If I remove the tag, then my

tags show up again in helm, but selecting another tag will then *replace* the current tag

which is not what I want.

Any ideas?

I have removed all #+TAGS: "fast selection" from my org-files.

I have this code on my machine, but it appears not to be working:

Thanks,

--Nate