Using javascript set country - not working

[iosdhaya]

i used following code.

<div id="Sort_country" class="bfh-selectbox bfh-countries" data-country="US" data-flags="true" data-name="country" data-blank="false" data-filter="true">

[ntpnhan]

I using the list country and flags,
I used this code $('#countries1').bfhcountries({country: 'US'}) to set country , but not work