title: Qualtrics: I have a 2x2 matrix table, and I'm trying to generate a custom validation
body: <p>I have a 2x2 matrix table question in qualtrics, each response option being a text box. I would like to only accept numerical responses. The two left columns can be any number. For the right two, they can be any number that is less than or equal to the respective box on the left, or a percentage. Having tried options, I'm not thinking tha this can only be done using matches regex option. This is new to me, so any help would be appreciated.
  Thanks,</p>