Hi,
I have created 2 custom field for 2 different time :
1. Created Time (Custom field - Date Time Picker)
2. Reported Time (Custom field - Date Time Picker)
3. Result (Numeric Field)
Automation rule created : {{issue.customfield_10134.diff(now).minutes}}
I like to display the result in h:mm:ss.
What is the right rule to apply?