Revmob Unity SDK for Amazon

I've just published my Android game to the play store here. Now I want to publish the same app to Amazon. I've used Revmob ad network in that. Now I want to publish it on Amazon too. I can see that Amazon is supported in Revmob Android SDK, we just need to change the App-ID. Revmob documentation however, doesn't give any clue on how to do the same thing in their Unity SDK?

I am currently using it this way -

 private static readonly Dictionary<String, String> REVMOB_APP_IDS = new Dictionary<String, String>() {
 #if UNITY_AMAZON
         {"Android","AMAZON_ID"},
 #else
         { "Android", "ANDROID_ID"},
 #endif
         { "IOS", "IOS_ID" }
     };

Is it the correct way? Or should I use "Amazon" as key for amazon ID instead?

Have anyone else used Revmob for their Amazon games?