Assigning field values after the lookup

I have a FROM with field lookup in another table. IT works fine.
The lookup field: Table1.ItemName assigns to Table2.ProductName

now I need to assign another field
ie.e Table1.ItemCode TO Table2.ProductCode

Since the record has been already red into the queue there seems to be no need to do sc_lookup…
SC doesn’t have eny embeded events for specific fields (which is pretty bad) where we could place a code. For example “OnFieldValidation” would be really nice to have…

how can I do this ?

Art