I'm trying to validate the answers in a text array. The respondents should enter codes, let's say either a,b or c in the text fields.

I used the evaluation: self=="a" or self=="b" or self=="c" in the question evaluation field. However, this doesn't work and the system says the question is not answered correctly.

Help?

this.NAOK=="a" or this.NAOK=="b" or this.NAOK=="c"

in Sub-question validation equation

self give you the list of answers , this can only be used is Sub-question

Thanks Denis!