I have 2 questions:
Q1. How many trips have you taken in last 12 months? In this the respondent types a number
Q2. How many of the [Q1 answer) trips you took were booked with the following companies? Enter a whole number for each. If none, write 0.
For Q2, I'm using a constant sum question format, but the sum doesn't have to add to 100. It has to be less or equal to the response in Q1.
I'm using SSIWeb 8.1.4.
How can I accomplish this?