Need fm-global example

I have been trying to set the localization file using the fm-global property of the fm-pivot angular 1.x directive.  I have tried specifying the value as a reference to a scope variable that specifies an Object with just the "localization" property (see code sample below).  I have also tried defining the value as inline JSON with just the messages that I want to override, but I cannot get Flexmonster to pick-up my settings.  It keeps using the default English messages.  Can someone provide an example of how to set the global object using the fm-global property.  I looked through all the existing examples on GitHub, but none you this property
 

$scope.global = {
    localization: localization/en.json
};

<div fm-pivot fm-width="100%" fm-height="100%" fm-license-key"{{licenseKey}}" fm-global="global">