How to update Target start field with date from a custom date picker field

Question

Help please on How to update Target start field with date from a custom date picker field

i found this code is the knowledge base  but the custom field i want to get the value from  is a user selected date field on the issue .   i modifed  this code to use my custom field id

* {
  "fields": {
    "Target start": "{{issue.sprint.last.startDate.jiraDate}}",
    "Target end": "{{issue.sprint.last.endDate.jiraDate}}"
  }
}

my code  --- i keep getting error msg{ "fields": { "Target start": "{{issue.customfield_16723.jiraDate}}" } }

Trudy P Claspill · Accepted Answer

Hello @Jo Aug

Welcome to the Atlassian community.

In what context are you trying to execute that code? Is it in an Automation Rule?

If so, please provide screen images that show the entire Automation Rule and the output in the Audit Log from the execution of that rule.