Automation Rule: Sub-task Logged Time Should Reduce Remaining Estimate of Parent Task (with Label Co

[Andreas Schaefer]

Hi Community,

I'm trying to set up an automation rule in Jira and would appreciate your guidance or suggestions.

Goal:
I want to create an automation rule that performs the following:

• When a sub-task is created under a main task, and time is logged in the sub-task,
• The logged time should be subtracted from the "Remaining Estimate" of the main task.
• This rule should only trigger if the sub-task has the label "backup".

Use Case:
We use sub-tasks labeled "backup" to track support or fallback work. To keep our main task estimates accurate, we want the time logged in these sub-tasks to automatically reduce the remaining estimate of the parent issue.

What I’ve Tried:
I’ve explored the automation builder but haven’t found a straightforward way to reference the parent issue’s remaining estimate and update it based on the sub-task’s logged time.

[Bill Sheboy]

Hi @Andreas Schaefer -- Welcome to the Atlassian Community!

Your rule's JSON expression to update the value appears to be using a created variable which was never created.

Please try adding that inside the branch and before the edit to calculate the value by subtracting the new worklog value.  For example:

• action: create variable
  • name: newRemainingMinutes
  • smart value: 

{{#=}} ROUND( ( {{issue.timetracking.remainingEstimateSeconds}} - {{worklog.timeSpentSeconds}} ) / 60, 0) {{/}}

How that works:

• subtract the new worklog from the parent's remaining value in seconds
• divide those to get minutes
• round to drop any remainder
• wrapping it all in a math expression

Kind regards,
Bill

[Andreas Schaefer]

Hi @Bill Sheboy ,

sorry for my late answer. I just followed your proposal and it works absolutely perfect. Thank you so much for your help, really appreciated!

Kind regards,

Andy

[Bill Sheboy]

Hi @Andreas Schaefer 

Awesome; I am glad to learn it is working!  Please consider marking this question as "answered" to help others with a similar need find solutions faster.  Thanks!