RerunErrorsUntilAllCorrect

[ananke]

Hi,

I have a viual search experiment where subjects have to perform a go-nogo 
task, pressing the button "p" when they see a target stimulus and withheld 
a response when the dont see the target. I need that all trilas where 
accuracy is zero are re-runned at the end of the experiment.
I adapted my experiment following the sample "RerunErrorsUntilAllCorrect" 
on the PST website.
The logic of this sample on the PST website is to rerun the listof trials 
(TrialList) when ACC>0. Whenever there is an error it modifies an attribute 
called "Correct" and then set the weight of the TrialList as the value of 
the "Correct" attribute. In this way when ACC>0 the procedure jumps back to 
the list where it should find the same list with the weights changed in a 
way that trials with errors have a weight of 1 and trials without errors 
have a weight of 0.

What I have achieved till now is that when ACC>0 the TrialList is rerunned 
(and its what I want) but it does it for all the trials.
I am sure that the problem comes from this command c.SetAttribAtSource 
"Correct", 1.
Since in my experiment I have a nested list, the command 
c.SetAttribAtSource "Correct", 1 is not going to modify "Correct" in the 
TrialList but is trying to do so at the source, namely in the single nested 
list that derive from the TrialList. 
Then, at the end of the experiment it does rerun the TrialList for the 
sample reason that the number of errors is > 0 and then the rerunned list 
has the same trial weights as the original one, so it reruns all the trials.

My question: is there a command that instead of c.SetAttribAtSource 
"Correct", 1 could tell eprime to set "Correct", 1 directly in the 
TrialList? 

thank you for any further suggestion

p.s.: I upload an exemple of how the experiment look like here 

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