# Change Block Linewidth [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [User Guide](Help%20System/GSTARCAD/2022/User%20Guide/(User%20Guide).md) → [Express tool](Help%20System/GSTARCAD/2022/User%20Guide/Express%20tool/(Express%20tool).md) → [Blocks](Help%20System/GSTARCAD/2022/User%20Guide/Express%20tool/Blocks/(Blocks).md) The bChgWid function can modify block linewidth quickly. ## Operation steps: 1. Start the command. 2. Input a new line width value. 3. Select block objects, for which the line widths need to be changed. 4. Finish changing the line width.