Newbie: Problems Showing Purchase Header Date

stoocake

I'm trying to show the Order Date from the Purchase Header table in a form based on the Purchase Line table. Using the following code I get an error: "The expression Code cannot be type converted to a Option Value"

If PurchaseHeader.GET(PurchaseHeader."No.") THEN
  HeaderDate := PurchaseHeader."Order Date";

If I try

If PurchaseHeader.GET(PurchaseHeader."No."::"Document No.") THEN
  HeaderDate := PurchaseHeader."Order Date"; 

...I get "The text 'Document' is too long. The text in code fields can have a maximum length of 2 characters"

What am I doing wrong?
Thanks in advance for the help.

kriki

you should do this:

If PurchaseHeader.GET(PurchaseLine."Document Type",PurchaseLine."No.") THEN
  HeaderDate := PurchaseHeader."Order Date";

-first the document type, then the no.
-use the purchaseline and not the header as a parameter (this doesn't give your error)