How to record survey time in a sawtooth variable?

Question

We wish to store survey time in a variable so that we can see in CSV file without exporting to excel/spss

Answer 1

On last page, create a free format question.

Suppose you have 500 pages in survey, then write following code:

<input type="hidden" name="capture_time" value="
[%
Begin Unverified Perl
my $a1=(PAGETIME(1,500))/60 ;
End Unverified
%]
">