This is not a valid value.

`.supported_countries` expects an array of [ISO 3166-1 alpha-2](http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2) country codes of MERCHANTS the gateway supports.

The CommerceGate.com website for example says _"CommerceGate.com offers website operators based in **Europe and North America** an easy, reliable and secure solution which enables them to immediately start accepting online payments."_... 

That is contradictory to "all countries in the world except these 5".

Please contact CommerceGate to find the exact list of merchant countries they accept if you do not already know.