How to constraint a sum of 2 variables with the third variable

User Support Form Building
,
3

Hi @daniel,

You could do this as outlined below:

In the survey tab of your xlsform:

Image 1
Image 11056×152 6.2 KB

Data entry screen as seen in Enekto: When the conditions are not met

Image 2
Image 2621×615 21.9 KB

Data entry screen as seen in Enekto: When a condition is met

Image 3
Image 3623×614 20.7 KB

Reference xlsform:

a7W5vADR84ZL443iRJsFyC (2).xlsx (10.3 KB)

Have a great day!