QFA is a filtered array, for which rows R1, R2, and R3 may or may not exist.

Where C1 is the first column, I'd like to utilize QFA_R1_C1, QFA_R2_C1, and QFA_R3_C1 in expression manager equations. However, these variable are only defined if their row is displayed.

Creating a hidden equation type question for each such value can achieve variables that are always defined whether or not their rows exist (i.e., Code: FORR3C1 | Question:{QFA_R3_C1} | and then utilize {FORR3C1} instead of {QFA_R3_C1} in subsequent EM formulas.)

But this can get to be a lot of expression type questions for larger arrays.

Question: Is there another way to ensure that {QFA_R3_C1} is always defined whether or not row R3 is filtered?

Try:

Awesome. Thank you. Yes, that works.

No problem.

For the benefit of others, NAOK stands for "not applicable okay" and should always be used for variables from questions that may not be shown due to relevance or conditions.


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Should we always use qcode.NAOK ? Is it there any situation that we should only use qcode (no .naok)?

It makes sense to always use .NAOK. I am not aware of any drawbacks.