I'm sorry I missed this thread. I was very busy, now I really appreciate your help!
I tried to implement with your method and it worked like a charm :D
Besides, there another little help, I implemented another method which uses touch, not bullet. I'm having this problem too... "on touched" input can destroy a group of instances togheter with global variable as boolean, I couldn't figure out.
Here is .capx contains 2 layouts
One is working, it uses bullets and another layout, it uses touch.https://dl.dropboxusercontent.com/u/76227787/TouchInstancesProblem.capx
Would you take your time to see this problem?
Thanks in advance.