# Error about AddViewProp

**URL:** <https://discourse.vtk.org/t/error-about-addviewprop/1352>\
**Category:** Development\
**Created:** [July 16, 2019, 1:57pm UTC](https://discourse.vtk.org/t/error-about-addviewprop/1352 "2019-07-16T13:57:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Moun](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/m/d9b06d/32.png) [@Moun](https://discourse.vtk.org/u/Moun)\
**Post date:** [July 16, 2019, 1:57pm UTC](https://discourse.vtk.org/t/error-about-addviewprop/1352/1 "2019-07-16T13:57:15Z")

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Hello VTK experts,  
I am new and I would like to develop a volume in 3D.  
In cases, I have used the addviewprop. Unfortunately, I have a crash when i used this function and I couldn’t solve this problem.  
This is my error message : ![image](https://discourse.vtk.org/uploads/default/original/1X/f43a94ee4a9db87d8b415fa46f505dcfd6703789.png)

Thank you for your help.