How to extract characters from summary using JSON and update a custom field?

[Dana Grahf]

Ticket Summary: zCDS.PROD-API-Submit-PayrollValidationTool Completed - Payroll Validation to be Reviewed

Use Case

I am trying to extract CDS from the summary - currently using  {{issue.summary.substring(1,4)} which returns CDS 

Now trying to take CDS and update the custom field Client Code with the CDS value.

Here is what I currently have...

Automation Additional Field Code using the Edit Issue
"fields": {
"Client Code": {{issue.summary.substring(1,4)}
}

[Gareth Cantrell · Accepted solution]

@Dana Grahf you should be able to select your "Client Code" field from the "Choose fields to set" dropdown and then use the smart value function directly, rather than using the advanced field editor as in the below example screenshot:

[Dana Grahf]

Thanks Gareth - that did the trick