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The Custom Validation : Piped Data Prior Question allows you to configure the total for a Constant Sum question based on a response from the respondent to a prior question.

For example : If you have a question that asks for the respondents monthly income, and then have the respondent fill out a constant sum question that totals to the respondents monthly income.

Important Notes

• There has to be a page-break between the "Source" question and the Constant Sum Question
• Validation must be turned on for Dyanmic Constant Sum Total.
• The "Source" question should be a Numeric Question Type and MUST BE A REQUIRED OPTION i.e. users must fill in a numeric value. User should NOT enter in symbols like "$" etc. when entering values for the "Source" question

How to set this up?

First set up the Questions, the source question which is a numeric text input type question and the following Constant Sum type question. For the Constant Sum type question click on the Settings link.

Screenshot

• Enable Validation for the question
• From the Sum Value from Another Question: drop list select the Piped Data Prior Question option.
• From the next drop list select the Question from where you want to pipe data.
• Click on the Save Question button.