So I have had a bit of trouble absorbing all of this, but then I got a hold of the json plugin and started again from scratch. This time around I think I have a firm understanding of the process. So here I will try to explain what I have found, and hopefully it will help me to finally get this done, as well as help others who struggle with this kind of thought process as well.
ui text box("YouTube API Key:",#ytapikey)
ui text box("Video Id:",#videoid)
divider
divider
set(#getcomments,$plugin function("HTTP post.dll", "$http get", "https://www.googleapis.com/youtube/v3/commentThreads?key={#yta