Thumbnail list with selection on right

Hi, I’m struggling with how to connect checkbox output list of “Thumbnail list with selection on right”(from component market) with any variable. Simply saying, I have a list of items with check box and want to get value of checked item. I’m new in appgyver and would be appreciated for any help.

Did you find out the solution? I too, could not see where to get the value of selected item from this list.