identifierForVendor returning 0 as value

In one of our apps we are using identifierForVendor to identify the device. I have already released 2 versions to app store and getting the value properly. On 18th Jan 2016 released a version in which identifierForVendor is coming ‘undefined’. Went through https://github.com/apache/cordova-plugin-device/blob/master/RELEASENOTES.md and found that in cordova-device-plugin 1.1.0 version device.uuid will give the value of identifierForVendor.I have updated the plugin and while testing I am getting the value as 0. Is this proper? Will I get proper value after uploading in app store? Or is it a bug in the plugin itself. Please suggest.