# Navmesh is not rebuild after I change the properties of NavModifierVolumn

**URL:** <https://forums.unrealengine.com/t/navmesh-is-not-rebuild-after-i-change-the-properties-of-navmodifiervolumn/373989>\
**Category:** World Creation\
**Tags:** navmeshbounds, unreal-engine, navmesh, question\
**Created:** [October 21, 2016, 2:07am UTC](https://forums.unrealengine.com/t/navmesh-is-not-rebuild-after-i-change-the-properties-of-navmodifiervolumn/373989 "2016-10-21T02:07:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![windywang](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@windywang](https://forums.unrealengine.com/u/windywang)\
**Post date:** [October 21, 2016, 2:07am UTC](https://forums.unrealengine.com/t/navmesh-is-not-rebuild-after-i-change-the-properties-of-navmodifiervolumn/373989/1 "2016-10-21T02:07:39Z")

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1. add a NavMeshBoundsVolume to the scene
2. add a NavModifierVolume to overlap the NavMeshBoundsVolume above
3. change the properties of the NavMeshModifierVolume, likes Transform, BrushShape, Size, etc, you can see the navmesh is not rebuild until drag the gizmo to change its location

 ![111808-rtx截图未命名.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/7/f/d7f7fffdca1d3f563325e46517335fc3d522a01e.png)

 ![111809-rtx截图未命名2.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/c/4/dc4a0847a7035927591b0756035350806eb36924.png)

 ![111810-rtx截图未命名3.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/9/7/a97334975279fe365d6a4ca13854b2df2ba3ec99.png)

 ![111811-rtx截图未命名4.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/0/3/7033744ed3838f4750fea998e56e1a131f013d8e.png)

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**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\
**Post date:** [October 21, 2016, 7:38pm UTC](https://forums.unrealengine.com/t/navmesh-is-not-rebuild-after-i-change-the-properties-of-navmodifiervolumn/373989/2 "2016-10-21T19:38:33Z")

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Hey windywang,

I’ve been able to reproduce your issue and have entered a bug report: [Unreal Engine Issues and Bug Tracker (UE-37670)](https://issues.unrealengine.com/issue/UE-37670)

Thanks for your report.

Have a great day