Initializing JS function from data-fred-on-drop not working.

[BigBlockStudios]

I'm trying to reinitialize Zurb Foundation interchange when an element is dropped into a dropzone. It does not appear to be working, I'm not getting any JS errors or otherwise. just "not happening"

<section id="hero" class="hero about background-cover align-items-end default-height" 
data-interchange="
[{{interchange_hero_small}}, small],
[{{interchange_hero_medium}}, medium],
[{{interchange_hero_large}}, large],
" 
data-fred-on-setting-change="reinitInterchange"
data-fred-on-drop="reinitInterchange">

  ........ some markup .......

</section>

I placed the reinit script in my app.js

`reinitInterchange();

function reinitInterchange()
{
console.log('reinitializing interchange')
}
`

I do get a log entry when the page loads, not when I drop the hero section into a dropzone.

Not sure what I can look at, the docs are pretty clear about just inserting a data attribute in the dropped markup.

[BigBlockStudios]

My error, this does work as advertised. The error being I did not fully understand a "global" js script... This works.

window.reinitLazyInterchange = function() { console.log('init'); $('.reinitondrop').foundation().unveilInterchange(); }

Though is there an event when Fred initially loads? Would be useful for disabling things like lightbox galleries....