Display Quantity Left on Quantity Field

Hello,

I using the Quantity Field function on a radio list with time slots within a event, so far the feature works great. If the time slot is full the option disappears as expected.


Four my project it would be great if the user sees the available quantity left beside the time.
i.e. 19:00 (4 Places free), 19:15 (8 Places free),…

Is there any way to implement this?
So far I found the magic happens within “getAvailableQuantityOptions” but there it only builds a array that will be displayed.