Upgrade from X-Plane 8 to X-Plane

Question

Hello, 

I have an old simulator(AST3000). They use Xplane 8.4 for Image Generator. and I have to upgrade to Xplane 10 but not working. Because the latest version of  X-Plane 10 doesn't have data out from 2 Dataref 

• sim/graphics/view/view_elevation_m_msl

• sim/graphics/view/view_elevation_agl
  

Do you have any solution to resolve this problem?