If i have objects that get created one by one, how do I get rid of the oldest instance (first) if there is more than 10. For example, imagine bubbles with numbers in them (1,2,3, ... 10). When bubble 11 gets created, 1 get's destroyed. When bubble 12 is created, bubble 2 get's destroyed and so on. Alternatively, the numbers could shift so it destroys bubble 1 each time.