Adobe air ane issues

ArgumentError: Error #3500: The extension context does not have a method with the name initAPI. 

am trying to use the ane from https://github.com/GrumpyCarrot/Android_Play_Games_Services_ANE

anyone can help me with this issue? or tell me the best free working ane that can be used with adobe air 22? What could be the issue as per the code?