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Custom error code for grid question to restrict rows that can be selected

I'm trying to create a custom error message for a grid question that is column-oriented. The first column asks how many total items a respondent consumes, and the second column asks how many of one subset of items a respondents consumes.

For example, this means that if they select 3-5 total items (row 2) for column 1, they shouldn't be able to select 5-7 subset items (row 3) for column 2. Instead, they should only be able to select rows 2 or 1 for column 2 (aka the row selected in col 1 and any lower rows).

thanks in advance for the help!
asked Mar 11 by anonymous

1 Answer

0 votes
This custom JavaScript verification should do the trick:

if (SSI_GetValue('[% QuestionName() %]_c2') > SSI_GetValue('[% QuestionName() %]_c1')) {
    strErrorMessage = 'Error.'
answered Mar 12 by Zachary Platinum Sawtooth Software, Inc. (144,125 points)