How to Randomly Show Control-Treatment Text - CBC Study

Hello,

I am currently preparing a CBC questionnaire which will include a text based on 4 groups (control, treatment 1-2-3). I tried using constructed list with the following code (Rand4Groups has the 4 texts and created as a list);


ADD (Rand4Groups)

RANDOMIZE ()

SETLISTLENGTH (1)


From here, I tried randomizing this as a block and used consturcted list for this;

However it seems to be not working as I tested and saw none of the texts. Has anoyone did this and/or know how to do this?

I appreciate all the help in advanced! Thanks...

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