I am trying to write an automation rule to update a parent Feature "Target start" date with the earliest child epic "Target start" date. I have the automation setup to branch on the Epic Parent link. I can find the earliest child epic start date by using the "issue in childIssuesOf({{issue.key}} ORDER BY cf[1234] ASC" - but I cannot seem to get the child epic start date by using the "lookupIssues" smart value to update the parent feature. In much googling it looks like this may not be supported but all LLM's are saying it should be. Any inputs on feature availability?
If this is supported, I have tried {{lookupIssues.customfield_1234}} and various permutations of to no avail - any tips?