Hi,
I understand there was a similar help request earlier by Steven M and solved by Nigel G. I have the same requirement as Steven and was happy to come across this solution in this wonderful forum.
I went through the solution completely but I am not able to understand where and how the temp list is being created. I am also not able to understand how the workflow is working with the command Set State tempstatelist of Selectallnone .
I am still a new to Bubble and custom events so maybe I am missing something very obvious 
Looking forward to help on this one