Forms personalization - defaulting Need By Date on req to Promised Date on PO

Hi,

Our purchasing department would like us to default the Need By Date on requisitions into the Promised Date on the resulting PO. Additionally, the promised date now needs to be a required field.

I followed examples in note ID 744069.1 in order to make the required field changes, but I am unsure how to get the date to default to the date populated in the Need By field on the PO. I see you can put VALUE in the property name but that seems to only work with standard values.

Thanks for any assistance!

Vanessa