# Assembly nodes in Multiblock Inspector expanded too far down the hierarchy

**URL:** https://discourse.paraview.org/t/assembly-nodes-in-multiblock-inspector-expanded-too-far-down-the-hierarchy/16790
**Category:** Development
**Created:** [June 9, 2025, 3:41pm UTC](https://discourse.paraview.org/t/assembly-nodes-in-multiblock-inspector-expanded-too-far-down-the-hierarchy/16790 "2025-06-09T15:41:45Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Tim\_Tautges](https://discourse.paraview.org/user_avatar/discourse.paraview.org/tim_tautges/32/16413_2.png) [@Tim\_Tautges](https://discourse.paraview.org/u/Tim_Tautges)
#### Post date: [June 9, 2025, 3:41pm UTC](https://discourse.paraview.org/t/assembly-nodes-in-multiblock-inspector-expanded-too-far-down-the-hierarchy/16790/1 "2025-06-09T15:41:45Z")

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Hi all. I’ve implemented using PDC and vtkDataAssembly in my reader and it helps immensely, easier and much more efficient. One problem though: node hierarchy is expanded up to 4 levels down in the tree, and that’s unwieldy when there are too many level-3 nodes:  
file  
..model  
body1  
..face1  
..face2  
body2  
…  
body1000  
…  
Is there any way to control how far down that auto-expansion happens, or to turn off auto-expansion entirely?

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 10, 2025, 8:19am UTC](https://discourse.paraview.org/t/assembly-nodes-in-multiblock-inspector-expanded-too-far-down-the-hierarchy/16790/2 "2025-06-10T08:19:33Z")

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Do you have a screenshot of the issue ?

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<div class="post-metadata">

### Author: ![Tim\_Tautges](https://discourse.paraview.org/user_avatar/discourse.paraview.org/tim_tautges/32/16413_2.png) [@Tim\_Tautges](https://discourse.paraview.org/u/Tim_Tautges)
#### Post date: [June 10, 2025, 1:21pm UTC](https://discourse.paraview.org/t/assembly-nodes-in-multiblock-inspector-expanded-too-far-down-the-hierarchy/16790/3 "2025-06-10T13:21:29Z")

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Here’s one for a simple box-in-box model:

 ![image](https://discourse.paraview.org/uploads/default/original/3X/9/e/9e0bbc4b16ed7d6a0ab4cdf667265b4f52674064.jpeg)  
Note, I’m renaming node 0 to the file name instead of the default name of “assembly”.  
For models with many many bodies, this makes it very cumbersome to e.g. scroll down and un-check the “background” body if it’s later in the list.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 11, 2025, 7:45am UTC](https://discourse.paraview.org/t/assembly-nodes-in-multiblock-inspector-expanded-too-far-down-the-hierarchy/16790/4 "2025-06-11T07:45:07Z")

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I got it.

I’m afraid there is no such control yet, although I think it could be added at the widget level somehow.