Millisecond Forums

Hello,
I've been running an edited version of Motter's Visual Search task using words instead of letters.
I'm having problems getting the 'values.target.present' column to show data for all trials. It is showing 0 (not present) and 1 (present) for all the practice trials, as it should, but only some of the task trials. This is seemingly at random, throughout all of the conditions and in a variety of word positions. 
I have no idea which bit of code needs altering, or if there is a way to recover any of this data from trials already undertaken.
I've copied some of the code below, but as I don't know which bit of code the problem relates to, please let me know what it would be helpful for me to post here (e.g. values/ lists).

Any advice gratefully received
Many thanks.

-<list Threat3T_targetPresent>
/items =  (0, 0, 1, 1, 1, 1, 1, 1, 1, 1)
/ selectionmode = list.arraysize_Threat.currentindex
</list>
also
-<trial Threat3T>
/ ontrialbegin = [
values.arraysize = list.arraysize_Threat.nextvalue;
values.selectTarget = list.Threat_targetStimItemNumber.nextvalue;
values.currentTarget = values.selectTarget;
values.targetPresent = list.Threat3T_targetPresent.nextvalue;
etc.