Automation to fill in day count

Kelli Keith_s3kzq6

I have two custom date fields in a Jira WM project.

"Job requisition signed" and "Offer Letter Signed."

I am implementing automation to fill in my "Days to fill" field with the number of days. For example:

Job requisition signed = March 1

Offer Letter signed = March 31

Days to fill should show 30.

I have this formula which is not producing the right count: 

{{issue.Offer Letter Signed}}-{{issue.Job Requisition Signed}}

How do I need to update this formula to produce the correct count of calendar days?

Gideon Nolte _Eficode_

Hi @Kelli Keith

Try: 

{{issue."Offer Letter Signed".diff(issue."Job Requisition Signed").days.abs}}

See: Jira smart values - date and time 

Hope this helps. 
Greetings
Gideon

P.S.: I would suggest using the {{issue.customfield_12345}} syntax over the {{issue.Custom Field Name}} approach to be more robust.