+ or - durations to your dates.
Custom Fields
Abacus will not calculate empty Custom Fields because JIRA will send a null value for empty fields. We do not want to assume a value since everyone has a preference. For that reason, either use the Edit issue Action to set a field before calculating or set a default value for the field in your custom field configuration
Do not use Alpha characters as defaults values.
Please write to our Support Desk with any questions you may have.