Forum Post: Update PO Date

I'm trying to run a script to update the PO Date when a PO is taken off hold.  My script is: retVal = 0 tmpDate = oSession.ModuleDate retVal = oBusObj.SetValue("PurchaseOrderDate$", tmpDate) When I run it, I get "This is an Invalid Date."  I've tried hard coding tmpDate = "20140429" and I get the same error. BTW, this same script works fine in Sales Order.  Thanks!