HTML web gallery with 3 sizes?

Question

Hello all! I'm getting started with the LR SDK and am currently dissecting the default_html.lrwengine gallery template. That gallery supports a grid of thumbnails which link to a detail page for each photo. I'm trying to add a second link on the detail pages which links to a full size copy of each photo (the detail page versions are not full size but instead something like "medium" resolution).
I have created photoSizes in the model for thumb, medium, and large with all the correct properties, I added a second AddPhotoPages entry to the manifest (for the full size version), and I have edited my thumbs.html (replacing grid.html), medium.html (replacing detail.html), and large.html files to link each other accordingly... however, the medium >> large link never seems to work.
Is there some trick to adding a third (or more) size to LR web galleries? Do I need to do something beyond just adding more photoSizes and more html files? Is there some funky syntax for including more than one AddPhotoPages entry in the manifest? I assumed that's what the "variant" property was for...

Answer 1

I've done a version of this where the large file links to the medium and it works no problem. code is based on tutorial code I've already written..
I'd need to see more code to see where the issue might be..
Here's what I have:
(I opted not to put the files in "content", also ignore margin-top, it's not relevent to this)
AddGridPages {
template='grid.html',
rows=model.nonCSS.numRows,
columns=model.nonCSS.numCols,
AddCustomCSS {
filename='resources/css/custom.css',
AddResources {
source='resources',
destination='resources',
AddPhotoPages {
template='detail.html',
variant='_large',
destination="",
AddPhotoPages {
    template='medium.html',
    variant='_medium',
    destination="",
In medium.html
<div id="detailContainer">
<div style="margin-top:<%= margintop %>px;">
<img src="bin/images/med/<%= image.exportFilename %>.jpg" alt="$image.metadata.description"/></div>
</div>
in detail.html
<div id="detailContainer">
<div style="margin-top:<%= margintop %>px;">
<a href="<%= image.exportFilename %>_medium.html"><img src="bin/images/photo/<%= image.exportFilename %>.jpg" alt="$image.metadata.description"/></a></div>
</div>