Can we make identifiers of the grid conditionally?

Apologies, just reread that - you're saying it's a row-by row identifier rather than the overall column. You can use an apply() of an if() function as above, but only if you're on 7.9 and above. If you're on an older version of appian, then you'll need to use a supporting rule and apply that rule with the two arrays as inputs.

Apologies, just reread that - you're saying it's a row-by row identifier rather than the overall column. You can use an apply() of an if() function as above, but only if you're on 7.9 and above. If you're on an older version of appian, then you'll need to use a supporting rule and apply that rule with the two arrays as inputs.