How to update the original estimate field to copy it's value from another custom field

Summary

How to update the original estimate field to copy its value from another custom field "Assignment Work" when "Original Estimate" equals zero.

Solution

• Use the initial Trigger as 'Scheduled' and set it as per your convenient schedule.

• In the JQL, mention all the Issue types if you would like to run this rule for some of the Issue Types (such as Tasks and Sub-Tasks only)

• Add the 'Related issues condition' and set {{originalEstimate = 0h}} condition to match.

• Once the above condition succeeds, it should act to copy the value from the 'Assignment Work' custom field to 'Original Estimate'.