I have 1 question with 5 answers, I want anyone to answer number 1 or 2 must add a comment in the comment box (required condition)
please help me

Hi,
always the best is to activate the survey and have a look at the answer table.
Here you see


The code of the question is stored in "QCode" and the comment in "QCode_comment".

And now you know your validation equation:
Either the code is greater than 2 or it is less than 3 AND the comment is not empty.
is_empty(QCode) OR QCode gt 2 OR (QCode lt 3 AND !is_empty(QCode_comment)
And with a tip it is fine.
Like this
{if(!is_empty(QCode) AND QCode<3 and is_empty(QCode_comment),"You answered "+QCode+"; a comment is mandatory","You may add a comment")}





Joffm

can you help me to step by step ?

Hi,
1st step: Enter this in "question validation equation"
is_empty(QCode) OR QCode gt 2 OR (QCode lt 3 AND !is_empty(QCode_comment)

2nd step (optional): Enter tsomething like this in "question validation tip"
{if(!is_empty(QCode) AND QCode<3 and is_empty(QCode_comment),"You answered "+QCode+"; a comment is mandatory","You may add a comment")}

Replace "QCode" by the Code of your question.

Joffm

done, thank you so much