require response for one of 2 numeric questions

Question

I have a question asking people to enter their height in meters or centimeters with a separate box for each

How can I require them to enter their height in one of the two boxes

Answer 1

Adding this custom JavaScript verification to one or both of the numeric questions will cause the error message to appear if both inputs are left empty:

if (!SSI_GetValue('NumericQ1') && !SSI_GetValue('NumericQ2')) {
    strErrorMessage = 'Both questions cannot be left empty';
}

"NumericQ1" and "NumericQ2" must be replaced with the names of the two numeric questions.