Custom rule for Karabiner(KeyRemap4MacBook) to change input source to Chinese Simplified using right option key

private.xml

<?xml version="1.0"?>
<root>
    <item>
        <name>Change Input Source to Chinese Simplified when press right option key.</name>
        <identifier>private.change_input_source_with_right_option</identifier>
        <autogen>--KeyToKey-- KeyCode::OPTION_R, KeyCode::VK_CHANGE_INPUTSOURCE_CHINESE_SIMPLIFIED</autogen>
    </item>
</root>