Compare Drop List Item to Supplier Checkbox List

Compare Drop List Item to Supplier Checkbox List

Hi,

I am using a Dropdown Field to capture the Country of
a Customer registering.

Is there a way to compare this value to a Supplier Checkbox
List where the Checkbox List of the Supplier may have several
Countries Selected

EG

USA = Country of Customer Registering

USA
UK
China = Countries in the Suppliers Checkbox List



Many Thanks