How to modify list

Civil 3D
1

Hi everyone
Please support mw in this issue. I need to modify the list below
image
so as it should be like:
2 list
0 item
1 item
…
3 list
0 item
1 item
…

2

Hi,
Use Flatten List and apply the needed Level.

3

thanks for responding

I`m aware about the Flatten
But how to apple the needed level?
image

4

Click on the > symbol on the right side of the input. I believe you want @L3 for this output.

5

nice, it works
Thank you guys so much