Let’s make similar changes to the Order Details controller. We’ll make the ProductID lookup open in search mode upon creating a new order detail. When selecting a product, the Unit Price will also copy over into the order detail. 
  On the Controllers tab of the Project Explorer, double-click on OrderDetails / Fields / ProductID (Int32) –> Products field node.
  
  Change the following settings:
              | Property |         New Value |      
             | Data Value Field |         ProductID |      
             | Data Text Field |         ProductName |      
             | Copy |         UnitPrice=UnitPrice |      
             | Search on Start |         True |      
             | Activate if Blank |         True |      
             | Lookup window description |         Select a product. |      
   
   Press OK to save the field, and press Browse in the top left corner. 
  Navigate to the Order Form page, and select any order. Create a new order detail record. A lookup will open prompting you to select a product. 
  
  Select a product, and you will see that Unit Price of the product has been copied into the order detail.
  