I would like to return to this topic: Controlling the random number stream for RandomRow. I need to do this because I am repeatedly invoking Simio from another program (Matlab or Python), and when I execute Simio (say) the second time I want to generate replications that are independent of the first time. I have no problem passing stream numbers to Simio, but of course RandomRow uses its default (which I assume is stream 0). If I can't get access to the stream, then I would be interested in how to code a SET ROW step that is the equivalent of RandomRow using a column of the table for selection.