# I have a problem regarding vtkSelectPolyData

**URL:** https://discourse.vtk.org/t/i-have-a-problem-regarding-vtkselectpolydata/9019
**Category:** Support
**Tags:** jobs, proposal
**Created:** [July 26, 2022, 10:02am UTC](https://discourse.vtk.org/t/i-have-a-problem-regarding-vtkselectpolydata/9019 "2022-07-26T10:02:07Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![loufear](https://discourse.vtk.org/user_avatar/discourse.vtk.org/loufear/32/3150_2.png) [@loufear](https://discourse.vtk.org/u/loufear)
#### Post date: [July 26, 2022, 10:02am UTC](https://discourse.vtk.org/t/i-have-a-problem-regarding-vtkselectpolydata/9019/1 "2022-07-26T10:02:08Z")

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If my polygon data has multiple layers (the polygon data also contains polygon data), when vtkSelectPolyData is selected, the internal data will be fixed and the surface selected part will be output. i am confused