I have the Header row in my BOM setup to automatically display the part number and title for the assembly.  The problem I have is that as far as I know you can only link it to the model specified in the sheet properties, so if I have two small assemblies on the same sheet then both BOMs will display the properties in the header from whichever assembly is selected in the sheet properties.  Is there any way to link these values to the assembly that the BOM is attached?