animation pined on continuously background problem

Hi,

I have a problem, I made a continuously background with wrap and bullet behavior, everything is good, but when I add fire animation for the torches, I found a tricky, the animation works fine for at beginning but after maybe 10 sec, the animation will disappear. anyone know how to figure this out? please help, thanks

the project file:

https://www.dropbox.com/s/c3lagixav15hr5e/1.capx?dl=0

On the start of the layout, you need to pick the various fire sprites and the bg1 object they are to be pinned to by using pick by UID. The way you have it, all fire sprites are pinned to the first instance of bg1, even the ones that appear over bg2 (because no bg1 is selected, I think c2 has chosen the one with the lowest IID for you).

Just for reference, you're better off posting questions like this in the How Do I forum in future. By the way - welcome to the forum!

really, thanks, I am a beginner, I understand your meaning, but do not know how to do it, would you please give me a sample?, thanks

Cool - here's a corrected version of your example. I suggest you dig into the tutorials and the manual and then start experimenting to see how you can manipulate objects to get the effect you desire.