Select elements of a category of a level

[Yna_Db]

@ntadjian01
This topic has been solved before:

How to select all elements from a category at each level?

Hello ! I would like to select all elements from some categories (beams, columns, foundations…) in order to export all my structure parameters to excel. I tried to do as in the next picture but it doesn’t work and I can’t find my mistake ! Does somebody know how to fix it ? [image] My script was working when I was just selecting all elements from a category without level distinction. Thank you in advance for your help ! Antoine

Can you send a screenshot of your work so we can see if there is anything specific? Thanks