Merge lists and reassign positions

Revit
1

Hello,

I would like to generate a list like attached picture, any advice?

Thank you so much for your help in advance.

Dynamo.PNG1440Ă—827 123 KB

Export Concrete Column coordinates to Excel.dyn (12.0 KB)

2

20170330-1.png772Ă—676 38.7 KB

3

Vikram,

Thanks a lot for your help. Why my node “List.AddItemToFront” is different from yours? I am using Dynamo 1.2.1.

Please see below picture.

Dynamo 1.PNG995Ă—811 96.9 KB

4

@carol.poon Click on the arrows besides item and list, check Use Levels and set levels as indicated in the image I posted above

5

I see and thanks!