Millisecond Forums

I am trying to run a batch script and assign files based on participant ID and session number. I want to have all participants do the tasks in session 1, split the groups to do 2 different versions of tasks in session 2 with odd participant IDs doing version A and even participant IDs doing version B, and then all participants would do all the tasks again in session 3. I tried the script below and it doesn't seem to work. Any advice would be very appreciated! Thanks!

<batch Task1>
/ sessions = (1 of 3)
/ file="Task1.iqx"
</batch>

<batch Task2A>
/ subjects = (1 of 2)
/ sessions = (2 of 3)
/ file="Task2A.iqx"
</batch>

<batch Task2B>
/ subjects = (2 of 2)
/ sessions = (2 of 3)
/ file="Task2B.iqx"
</batch>

<batch Task3>
/ sessions = (3 of 3)
/ file="Task3.iqx"
</batch>