# CHANGEBASE Command [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [C](Help%20System/GSTARCAD/2027/Commands/C/(C).md) ## Function Description: This command is used to allow changing the base point position of a block. You can move the base point and keep objects staying in original position, or move objects and keep base point staying in original position. ## Command Access: > **Icon:**  > **Menu:** Express > Blocks > Change Base > **Ribbon:** Express > Blocks > Change Base > **Toolbar:** / > **Command:** CHANGEBASE > **Alias:** / ## Command Prompts: ``` Please select a block: Specify new position of the base point: Specify the mode[move Object/move Base point] <move Base point>: ``` ## Move object Moves objects in the block according to the new relative position of objects and base point, while the base point is staying in the original position.  ## Move base point Moves the base point, while the objects are staying in the original position.  --- **Related Tasks：** - [To Work With Express Tools (GstarCAD 2026)](../../../2026/Commands/01%20Procedures/To%20Work%20With%20Express%20Tools.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_C/CHANGEBASE.html) · © Gstarsoft Co., Ltd.