Hi Walaiporn! Glad, you've figured it out =) On a side note you can reference sublayers, like this: Layer 01::Sublayer 01. With two colon's (::) separating the layers. See attached image Cheers! Arie

Sorry, I would like to change the screen shot to this one.

I ran into the same problem. And in order for this to work (1) a layer cannot be nested. (2) layer name cannot begin with a number.

Hi Jeong, Could you post a picture of the error please using the "Add an image" link? What happens when you open the 3d model and Grasshopper definition from the assets? Do they also don't work? Let me know and I'll check what the problem is. Best, Arie