Add to "Product Import Block" search by "Supplier Code"

Good afternoon, we have a BP of posting from the supplier to which we add the file received from the supplier with the prices and quantity of goods sent to us through the "Product Import Block" form. The question is whether it is possible to add a search by "Supplier Code" to the "Product Import Block" by first selecting the process supplier. Block screen: https://prnt.sc/w3x8c8 Or perhaps tell me another way how to add products to the product table with only the supplier code (there is information with the code in the database, they were loaded through price lists)?