How do I make an object chase a smaller object?

For example I have one object/Sprite called "Germ" which I copied and pasted multiple times, with the W x H being different for all of them.

How would I make a germ chase another germ that has a lower width than itself?

just check for the width?

germ.width<germ.width

but for haveing the same object more than once you need to get there UID

https://www.scirra.com/tutorials/361/un ... moke-trail

So, how would I go about using that information to make the bigger object chase the smaller one now?

Would pinning one germ to the other work?

Give this a try?