Ruben,
OK I think I understand. There is an additional challenge associated with this however, because components do not inherently have an x-direction in HyperSizer, only elements do. Although the material directions in a component should be generally consistent, this is not a requirement (example: tapered stiffeners on a wing). The same logic applies with normal directions although there are few useful reasons to have them non-uniform.
Unfortunately I do not think there is a good way to extract the modified material directions from HyperSizer unless a FEM update is performed and they are extracted per-element from the FEM. Note that a FEM update can be executed from the scripting API, if that is helpful.
-Stephen