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Use case

When the 'Number field' custom field is changed in a sub-task, the corresponding field in the parent, representing the sum of those field values, gets updated with the updated result.



Function

<link to function being used>

Use case description

When the 'Number field' custom field is changed in a sub-task, the corresponding field in the parent, representing the sum of those field values, gets updated with the updated result.

Complexity




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 and choose the Field Changed Event


Choose Number Field in Fields* and Any value in Changed to*

No further configuration needed. The automation rule is triggered every time an issue is being transitioned.


Issue Selector

Add Selector → Issue Selector


Target Issue(s)*: Parent Issue

Update Field

Add Action → Update Field


Field*: Number Field


Update to*: Value returned by parsed expression


Parser Expression*

Set it to Advanced and use the following expression: 

sum(fieldValue({issue.cfNNNNN}, subtasks()))


NNNNN is the field code for the field to be summed up.





Activate the rule by clicking on the Activate rule button  →



Screencast

This is how the configuration above should look on your screen


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