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The sad thing is, that array by column has no validation settings at all. Normally you would use unique(self) to prevent that answers can entered more than once. But array by column logic settings are only offering "Randomization group name:". Nothing else.holch wrote: Ibut I think in this case, using an array by column layout should do the trick, except for the fact that one could chose the same item as best and as worst. So probably some more checks necessary.