I want to subtract one question response from another to display a default answer (number).
So far, I have tried this and it does not work: =[question(“value”), id=”254″]-[question(“value”), id=”257″]
The merge codes are designed for inserting data into various places within your survey.
To perform math functions you will have to develop custom scripts (if you have a PRO or ENTERPRISE level account).
The script would look something like this:
%%X = sgapiGetValue(254)
%%Y = sgapiGetValue(257)
%%Z = X – Y
You can learn more about custom scripting in the SurveyGizmo documentation – http://script.surveygizmo.com/help/article/link/getting-started-with-custom-scripting