Currently the only way to set a quota on a numerical input is to create a mandatory radio question after the numerical input which is only shown if the numerical input satisfies some condition. For example, if numerical input > 500, show radio button question. Then, you can set a quota based on that, which is not very elegant.

I think it would be quite useful to have the ability to set quotas based on a true boolean operation, like how validation works. So you can write in the box for the quota you're trying to create:

if(numericalInput>'500')

Which will trigger the quota based on that requirement.

What do you think?

Here's a link to my ideas post. Upvote it if you think this is useful!

ideas.limesurvey.org/ideatorrent/idea/435/