expression manager code for all combinations in a number array - by: jelo

TransportLab wrote: I would like to validate that the sum of all different numbers entered in the matrix equals the input in a previous question and I would like to avoid writing the 81 combinations (VAR1_Y1_X1+VAR1_Y1_X2+....)

You can save yourself a bit of typing. Depending on the question type you can access row, columns complete question via self,that. E.g. {sum(self.sq_nameofsubquestion)} which than expands internally without typing every variable.

To learn a bit about self that etc.
manual.limesurvey.org/Expression_Manager....27that.27_variables