Part to unbend

Hi Everybody,

Please can somebody help me and give me an advise with sheetmetal unbending?

I try to do this in both solid and then convert and sheetmetal, but Creo cant unbend it.

I uses Blend feature to create this shape.

I use Creo Parametric 2.0

Or some advise how i should create it?

Please see attach file.

Thanks for your ineterest.