Language files won't work (I have searched this, none of them helped me)

Hi, I have a language file that I made from a template. It shows up on options under language, but when selecting it and going in-game, the items don't get renamed. Other things from the resource pack do work like custom .ogg (sounds), texture and etc but not the language

I saved the language file in (.minecraft/resourcepacks/Blockz/assets/minecraft/)

I also did set up my pack.mcmeta to show the language. 

Any advice?

/ Jason