I have three custom fields:
- Cybersec Last completed: {{issue.customfield_13488}}
- Cybersec validity length (years): {issue.customfield_13489}}
- Cybersec next due: {{issue.customfield_13490}}
I want to populate a date in the Cybersec next due that is the difference (in years) of the Cybersec Last completed date according to the number in the Cybersec validity length (years)
This automation results in a success, but for the same year!
{{issue.customfield_13488}}.diff({{issue.customfield_13489}}).Years}}

How can I get it to increment by the number of years in the Cybersec validity length (years) field