Millisecond Forums

I'm using the competitive reaction time task and I want to my first 5 trials to have a "0" response from the computer. The first five are good but the 6th trial is supposed to be the first point where the computer aggresses (i.e. delivers a blast of noise) but when I run the script the 6th trial doesn't give aggressive feedback. All of the following trials work correctly as they appear in the script, but for some reason I can't get the 6th one to do what I want. What am I missing?