# SetItemDisplayVisibility works only occasionally
**URL:** https://discourse.slicer.org/t/setitemdisplayvisibility-works-only-occasionally/31250
**Category:** Development
**Tags:** python
**Created:** [August 20, 2023, 2:14pm UTC](https://discourse.slicer.org/t/setitemdisplayvisibility-works-only-occasionally/31250 "2023-08-20T14:14:10Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@moraleda](https://discourse.slicer.org/u/moraleda)
#### Post date: [August 20, 2023, 2:14pm UTC](https://discourse.slicer.org/t/setitemdisplayvisibility-works-only-occasionally/31250/1 "2023-08-20T14:14:10Z")
Hi there,
I am creating multiple lineNodes and storing them in multiple folders with Python console in Slicer. E.g. I have folder1 with line1-1, line2-2 and folder2 with line2-1, line2-2. After creating, I want to set visibility to 0 and deexpand the folders. But the following code works only for deexpanding the folders and it just ignores the first line.
```auto
for folderID in folderIDsList:
shNode.SetItemDisplayVisibility(folderID,0)
shNode.SetItemExpanded(folderID, 0)
```
Lets say ‘folderIDsList = [30,42]’. If I then run single line command ‘shNode.SetItemDisplayVisibility(42,0)’ it also does not do anything.
But if I click with my mouse on the Eye by the folder in the module panel and run the for-loop again, it works!
Could you please explain this behavior to me?
Thank a lot!
Ps.: ‘shNode = slicer.mrmlScene.GetSubjectHierarchyNode()’
---
### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [August 20, 2023, 2:17pm UTC](https://discourse.slicer.org/t/setitemdisplayvisibility-works-only-occasionally/31250/2 "2023-08-20T14:17:43Z")
Display nodes are created when needed, for example when you click on the eye icon of a folder item. You can also create a folder display node and set it in the folder item using Python scripting.
---
### Author:  [@moraleda](https://discourse.slicer.org/u/moraleda)
#### Post date: [August 21, 2023, 8:38am UTC](https://discourse.slicer.org/t/setitemdisplayvisibility-works-only-occasionally/31250/3 "2023-08-21T08:38:18Z")
Thank you for the explanation!
I then found more out here: [Script repository — 3D Slicer documentation](https://slicer.readthedocs.io/en/latest/developer_guide/script_repository.html#manipulate-subject-hierarchy-item)
(Maybe it is useful for future readers.)