Hello,

I'm french, so sorry if my english is not perfect.

I'm making a survey in a faculty, students have to choose a "free course" they can take. They can make two choices (in case they don't have the first, the second will be used).

Each "free course" have a limited number of places, so I want to use quotas. I've made two identical questions (multiple choices), which have exactly the same subquestions. Let's call them QCHOICE1 and QCHOICE2.

My problem is that I would like the quota to apply at once in both identical subquestions of QCHOICE1 and QCHOICE2.

Exemple : One of the free course is called "anatomy", there is 100 places on it. If a student choose it in QCHOICE1, I would like the quota to become 99 for this choice in QCHOICE1 and in QCHOICE2.

I hope my explanations are clear, don't hesitate to ask if not. Waiting for your lights ^^