question about duplicated sprites

a have a question, i have a sprite, and i duplicate it by create a new sprite in "create object" in system action, and a want to change a frame of one of all duplicated sprites, but when i do it, it change the frame for all the duplicated sprites, how do i change a parameter of only one of all duplicated sprite?

That instance should be in the S.O.L. within that event. Other wise you can change a private variable of that instance within that event and use the pv to select it in another event.

You need to use conditions to pick (or select) one of the duplicates, or instances. Also it's good to note that after an object is created it is automatically picked.

One way to pick only one instance would be:

+ Sprite: Pick one at random

-> Sprite: Set animation frame to 1

thanks, i don't see the pick action XD

It's a condition, not an action - so look in the conditions.