B1IF - Marketing Docs Due Date

Hi experts,

I have the following question related to my recent B1IF project.

1. In Atom0.xml, please advise how to get today's date as the DueDate, OR 3 days from today's date?
2. For the current attempt, I tried to hadcode the date as below.

<DueDate>

20150512

</DueDate>

But the message log returns :

Exception : DI error: Invoke of: GetBusinessObjectFromXML Source: Description: Property ''DueDate'' of ''Document'' is invalid
Please advise what is the expected format for date.
Thank you.
Kind Regards,
Krisma