How do I pick an instance of an object on mouse wheel down?

I have two instances of an object that I would like to move position (scrolling effect) on mouse-wheel-down and mouse-over. However I can only get them both to move at once and cannot pick the correct instance. The c3p file attached demonstrates the three different methods I've tried.

https://www.dropbox.com/s/a1x62jdc3swwijb/scroll-test.c3p?dl=0

Thank you for your help.

I found your problem. On start of layout you pinned all the fire objects to the first list object, since there was no picking which one, construct just picked the first one. To fix it, make event 1 look like this:

+ System: On start of layout

+ System: For each fire

----+ fire: Is overlapping list

-----> fire: Pin Pin to list (X: True, Y: True, angle: True, width: No, height: No, Z: False)

Hope this helps,

Give me a Pixel

Thanks! That definitely solved the issue in my example.