Even the workaround, I think, it's not praticable: manually adding columns it's not possible because it's not admitted adding columns on a not empty matrix and you have not events available with this condition, even formLoadBefore.
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Even the workaround, I think, it's not praticable: manually adding columns it's not possible because it's not admitted adding columns on a not empty matrix and you have not events available with this condition, even formLoadBefore.