# Update Truss System Grid From Roof

* Select a grid
* Select **Update Truss System Grid from Roof** directly from **Truss+** menu
* The grid will be automatically updated according to the roof geometry

![](https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2FNy2VLWsGo26HZcL7hcV7%2F0.jpeg?alt=media)

* If an error message ‘Select Grid to modify’ occurs, it means that the user hasn’t selected grid before trying to update it

![](https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2F3rY5f8v3ra4N9SozLcSo%2F1.jpeg?alt=media)

![](https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2FxQFJnEpxTiQFQlb8GyD4%2F2.png?alt=media)