Link QTY from BOM on Sheet 1 to BOM on Sheet 2

Hello All,

I hope some one out there can help me on this one.

I have an Assembly on sheet 1 of my drawing file with a BOM linked to it.

I have placed the base plate part file that i have used in the assembly onto sheet 2 and attached a secondary BOM to it.

How can I link the QTY in my first BOM to my second BOM?

Thanks for reading.

SolidworksDrawings And Detailing