FieldAddressBlock.Format_address_on_country_or_region property. Gets or sets whether to Format the address according to the country/region of the recipient as defined by POST*CODE (Universal Postal Union 2006)....FieldAddressBlock.format_address_on_country_or_region property. Gets or sets whether to format the address according to the country/region of the recipient as defined by POST*CODE (Universal Postal Union 2006).