Google Adwords API 'getKeywordVariations' not working properly

Question

I'm trying to use the 'GetKeywordVariations' method of the google adwords API, documentation at this page. According to the documentation, it should return these fields, including lastMonthSearchVolume. When I try this, i get all the fields except for lastMonthSearchVolume. Does anyone know why?

Answer 1

I found the answer. i was using the older version of the API. Updating to the latest version fixed it .