On this page
Use case
Sum up all the story points of stories under an epic as Total Story Points.
Configuration
Create a new Calculated Number Field (by JWT) custom field and name it properly.
Providing a description will help you to identify what the custom field does but this step is optional
Parser expression
Add the following expression:
sum(fieldValue({10106}, issuesUnderEpic(%{00015})))
Once configured and added to an issue screen, the result will look like this:
If you still have questions, feel free to refer to our support team.