If you are just scaling the model in the parametric study, then i think the selection would remain the same. However, if you are making some modifications to the geometry by yourself (which you cannot since that would mean that you cannot do the parametric study), then that named selection can get lost and then you might have to rename it. nAs far as the scaled geometry is concerned, then there is no rotation of the geometry. Hence you can also directly use the parallel rossette as well. However, if there is a rotation in the geometry, then the fiber directions will be different on each of the design point. This problem can easily be shunned if edge wise rossette is used.nUse a 'sampling tool' in ACP Pre to find out the thickness of the location where you want to find the thickness. Make that the output under the parametric study. n(Please also click on 'Yes' if this answered your question).n