In what program are you working? Sketchup?
You can modify the 'placeholder' geometry, but that does not affect the rendered object. Other then scaling, you can't really modify enscape assets. (there is a workaround by manipulating files in your directories, but it's complicated).
Ah, thanks. And yes, Sketchup. That's too bad though, as I know assets normally appear as only one geometry, yet the curtains acted like self made objects, so I figured, this makes sense, as curtains with railings don't only come in one size/ length. Even though it worked perfectly in Sketchup, it does not update to Enscape.
Thanks for the reply!