What would be the work flow to make the transparency working in cocos studio 3D scene?

I am using cocos2d-x for game development. There is 3d scene in my game. All the other maps are loading and working fine but those map which I have applied transparency in 3d modeling software ‘blender’. Its’ transparency not appearing in cocos studio 3d scene.

What I have tried out: 1. Have checked .mtl file there is discription I have added to pick that transparency file correctly 2.I have converted .obj file into .c3b file still even after there is no transparency coming on map.

please help the If anyone know the procedure to make it work. If its through coding in c++ please explain it well