The CountryCode() function returns two-letter country code of a language.
Syntax
CountryCode(language)
Returns
A text that contains the two-letter country code of a language
Parameters
language– a language value
Examples
CountryCode(en_US) /* "US" */
CountryCode(en_GB) /* "GB" */
CountryCode(nl_NL) /* "NL" */
CountryCode(tr_TR) /* "TR" */
