<$button popup="$:/listpop">Pop up list</$button>
<$reveal type="popup" state="$:/listpop">
<$list filter="[tag[$tags$]]">
<div class="tc-dropdown-item">
<$button set="!!$field$" setTo="YES"><$view field="title"/></$button>
</div>
</$list>
</$reveal>
\end
<<choose_spell "stuff" "HelloThere">>
In your example, I couldn't figure out what you wanted set to what. So these buttons just put a text value "YES" in the "stuff" field of the tiddler that is clicked on. If you want the generated buttons to look like links, I think you just add some classes to them.
In your example you were using {{##myfield}} at the bottom which I didn't understand because ## is text reference to a data dictionary entry. You can't be referring to a data dictionary (AFAIK) that is the same tiddler that you are currently in. So ... are you trying to pull from a data dictionary somewhere?
Good luck!
Mark