I have a business rule on a quick create form and I would like to set a field of type duration to a certain value. The business rule is being executed because when I use the action "Set Visibility = No", it hides the field correctly. However, if I instead use the action "Set default" or "Set Value", they are being ignored. This is an example of what I have on the business rule, 480 minutes should display as 8 hours. 

However on the application it looks like 1 hour

Do you know what the problem is?