Help with Sortable JS - Kanban

I have a 4 column grid each containing a repeat of records grouped by value (stage)
The page is similar to the following https://jsbin.com/fogujiv/edit?js,output
But using DIV"s rather than UL

I am struggling to find a way to use the onEnd (dmx-on:end) to perform a server connect database update on the dragged record.

Has anyone done something similar? I have seen the form-repeat guide, but thats about it.

Any help would be greatly appreciated.