> For the complete documentation index, see [llms.txt](https://help.auxalia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.auxalia.com/plant-tools/plantexpresstools/how-to-use/plantprojectmanager/usage/pid-3d-drawing-node/update-bolt-calculation.md).

# Update Bolt Calculation

"Update Bolt Calculation" is updating the bolts used by PlantExpressTools' [Bolt Calculation](/plant-tools/plantexpresstools/collaboration-workflows/bolt-calculation.md). you can also select multiple drawings.

![](/files/ZPIJRLC5GF6s5X2d2gRq)

The selection dialog opens where all Pipe Line Groups of all selected drawings are shown.

For details see [Bolt Calculation](/plant-tools/plantexpresstools/collaboration-workflows/bolt-calculation.md).

![](/files/Me36SCALjx1HUMNqd0C0)