I have this code in a BOI script (SO Header, PreWrite)...

...
Set oPayment = oSession.AsObject(oBusObj.PaymentObj)
retVal = oPayment.GetValue("CreditCardAuthorizationNo$", sAuthNo)
retVal = oPayment.GetValue("AuthorizationDate$", sAuthDate)
retVal = oSession.AsObject(oSession.UI).MessageBox("","CreditCardAuthorizationNo " & sAuthNo & " sAuthDate " & sAuthDate)

But it is coming up blank.

Yet I have a button script on the panel with the exact same script code, and it works?!?

Is there something I can do in a BOI script to reliably get access to the CC payment data for an SO?

I tried adding these lines, but nothing seems to help.

retVal = oBusObj.ReadAdditional("PaymentType")

retVal = oBusObj.ReadAdditional("PaymentTypeCategory")

retVal = oBusObj.ReadAdditional("PaymentObj")

(Big picture of the script is to check for a valid PreAuth on an SO for customers with certain Terms... so I need reliable access to payment data to check the Auth #, amount and date).