Happy New Year Community

I am trying to make an effect that follow my bullets so I used one of the codes that I found in AUM....
However, the effect start fading out and then no effect start to follow the newly created bullets ...
Here's an example of what I am doing and what's happening just open the effect.c file and press run and wait for 5 seconds and see how the effect starts to disappear and the newly created boxes or bullets have no effect following them...
http://www.multiupload.com/F83YQ1BU2WPlease help