I have a survey question which contains multiple numerical dropdowns (using the array question style with dropdown design), but I want to ensure that respondent's answers add up to 100.

It basically asks participants to state what percentage of their time they use each of the listed devices - so it will need to add up to 100.

I've done this before using a free numerical text with the following equation: sum(self.NAOK)==100

Is there a similar equation I can use in this instance where respondents give a closed answer through dropdowns rather than free text?

I've attached the survey question!

Thank you.

Assign numeric answer codes.

Hi, did you see what you are doing?


You sum up ("A2","A4","A2").

Tony told you what to do.

Joffm

You can use sum(self.shown) too.