To add a default path to the stock code, need to add a record 50 to Images & Forms, then put the path into LookupString, which is the field just below the Footer band.
-Admin - Configuration - Images/Forms
All this does is prefix the Stock Code with the SharePoint String.
IMAG:Unique = 50 Get(IMAG,IMAG:KeyUnique) L_LookUpLink = Clip(IMAG:LookUpString)&Clip(STSH:CODE)