Hi, I'm new to babylon JS, sorry for silly questions. I follow this tutorial http://doc.babylonjs.com/tutorials/Parametric_Shapes and when i'm extruding my 2D shape along Z axis it looks just fine: http://www.babylonjs-playground.com/#RF9W9#387 When I do it along Y axis (with changed path) result becomes flat: http://www.babylonjs-playground.com/#RF9W9#389 How do I create correct path?