CreateUVcrv does not work on surface generated with Sweep1

I create the surface using Sweep1 with rail and multiple near identical profiles. Then I need to apply CreateUVcrv command to this surface but cannot select entire surface as shown on the image

Any advice?
Thanks in advance

Hello - try the Refit Rail setting in Sweep1; if the profiles are not identically structured curves, you may want the Rebuild - maybe 8-12 points - as well. Feel free to post the curves.


It (Refit Rail) works! Thanks!