How do I give multiple balls their own trails?

Hi, would love some help here. I need to make 2 or more balls (of the same object type) to have trails.

I have attached an old capx I saved a long time ago, probably from R0J0hound if I recall correctly. I changed a few things and tried other methods but couldn't get it to work. If you look at the capx, only one of them has trail. Hopefully someone can give me some pointers. Thanks!

Below is the capx for the original expressions:

https://www.dropbox.com/s/92gz3hotkpk5m ... .capx?dl=0

Make 2 events from event 7. One for 'on start layout', one 'for every tick'.

Move the 'on start layout' way up.

Now just make a new event containing a system > For each (Ball) condition.

Drag all events (except the 'on start layout) as a sub under that new 'For each' event.

99Instances2Go

Works perfectly! Thanks.