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Use case
When a custom "Number field" is changed in a sub-task, a corresponding field in the parent issue, representing the sum of those field values, will be automatically updated.
The rule executes every time the field is being updated on a sub-task.
Don't want to use an automation rule? Just take a look at JWT calculated number fields instead!
Field changed event
Create a new rule and name it appropriately.
Providing a description will help you to identify what the rule does but this step is optional.
Add a Trigger → Field changed event
Fields*
Choose your custom Number Field
Changed to*
Choose Any value
Issue selector
Add Selector → Issue selector
Target Issue(s)*
Choose Parent Issue
Update field action
Next to the Issue Selector click on Add → Action → Update field
Field*
Choose your custom Number Field
Update to*
Choose Value returned by parsed expression
Parser Expression*
Set the mode to Advanced and enter the following Parser Expression
sum(fieldValue({issue.cf11502}, subtasks())) #Replace field code with the field code of your custom field. Use the field dropdown to automatically insert the field code
{issue.cf11502}
is the field code for the custom number field to be summed up. The field code will differ in your instance.
Enable the rule by clicking on the Enable button →
Screencast
This is how the configuration above should look on your screen
You can get the same result by configuring a Calculated Number Field.
Related use cases
If you still have questions, feel free to refer to our support team.