How do I change/destroy a specific object?

I have a lot of sprites arounds 1 200. That's a lot of works. I'am not a professionnal with a lot of time^^

I see two options

But in two cases, it changes all the symbol who appear son the screen and not only the one related

Element is the family with all the sprites who changes color

You have 1200 unique sprite objects, or 1200 instances - those aren't the same thing.

This would go faster if you could post your code.

Here's an example using a ParentUID.

http://www.blackhornettechnologies.com/Construct3Stuff/Samples/parentuid_b_mathie.zip

Edit: sample updated to change frame.