The debugger reports this error: TypeError: targets[row.pair][row.target_polarity] is undefined
Your CSV file does not contain the same values in the target_polarity column as in the former CSV file. The former CSV file had POS and NEG, hence the recurrent references to POS and NEG in the code. In this file, you have posi, neg and NA in that column. I would suggest you replace the occurrences of POS and NEG with posi and neg, respectively, but you’ll still be left with unhandled NAs (which also affects the “pair” column by the way). It seems to me that those NA rows are not of the same nature as the posi and neg ones, in that they won’t fall under the same crossing/distribution of conditions that you describe in your initial post, and that they should therefore live in a separate CSV file referenced somewhere else in your code
Regarding your other question, just edit the newTrial in the code to generate trials that suit you
Jeremy