Hello there, looking for documentation I've found how to validate each field of an Array Question Text.

Using as SubQuestion validation, I can check every single field inside the array.
But what if I want to validate only one cloumn of SubQuestion?

For example, is it possible to refer to column, such as a Q12_SQ*_SQemail ? Where SQemail is the Y-axis of the column

I've just discovered I can refer as self.sq_Colname to loop in y direction.
But writing this as condition: ! is_empty(self.sq_Colname)
Gives me an error in ExpressionSyntax, because I get ! is_empty(Qu.Row1.Colname, Qu.Row2.Colname, Qu.Row3.Colname) as final condition

Hi,
I am surprised that nobody answered your initial post.
This is the standard usage of "self" and "that".

But you are right. This only works in functions like "count" or "sum" that take a list of questions as parameter, as you may read in the manual (implemented functions).
"is_empty" expects only one parameter. Therefore you can't use it here.

Joffm

Thank you Joffm for your kind reply (^^)/
I managed it by using self.sq_Colname ne "" and it does validation for each field in the column. The problem is I have subquestion rows relevace activated but it's still trying to validate hidden rows also, such as the whole array's rows are shown

I've solved adding a previous question (number, or range 1-5) indicating how many rows are expected.. Then, I added this validation on the later question:

count(self.sq_Colname.NAOK) eq Qprevious.shown

I like to have a sq_XX system for this too

is_int(this.sq_INT.NAOK) apply only to line with INT in code.