Filtering by tablerow for random allocation to conditions

Hello everyone,

I have an experiment ready to run, but I just can't look at my code as it is really ugly. The problem is the following (bear in mind, this is a simplification of my problem), I have a table:

#@1stimulus  @2stimcode @3position   @4color     @5condition
stim1        1 left        black         1
stim2        2 right       black         1
stim3        3 center      black         1
stim4        4 left        red           2
stim5        5 right       red           2
stim6        6 center      red           2

The way in which I've made this experiment is by having two different tables, and ofcourse two different tasks - two different blocks. And since this is a simplification, in the actual experiment, I will have 8 tables/tasks/blocks... That doesn't make sense.

I have 2 ideas on how I would go about this, but cant seem to work it.

1. I've tried to define a random number in the options (I though I could do this, but apparently you cant)

options
set &a random 1 2and in that case my table would consist of three rows only:

table MyTable
#@1stimulus  @2stimcode @3position   @4color     @5condition
stim1        1 left        black         1
stim2        2 right       black         1
stim3        3 center      black         1and if that worked, I would start the task syntax by saying something like:

task MyTask
if &a == 1
set $stimulus @2
fi
if &a == 1
set $stimulus @2+1
fiThat seems much more concise.

2. Different approach would be to have a complete table (with 6 rows) and then say that the trials should be sampled from the rows where @5 == $x and $x should be a random number between 1 and 2 - but for one participant the whole time...

I hope I was clear. And I know it is not too important, since I already made my experiment to run, but I get nervous when I see there are 500 rows of syntax when I know there should only be couple of dozens.

Thanks all!
Best, Matia

it is possible to do what I wanted to do in number 1. I can set a random number in a survey and then call it in the experiment!

Gonna leave it here if anyone else encounters similar problem!

But, if anyone has a way of filtering using information in tablerow, please tell me