# UCSDETECT System Variable [GstarCAD 2026](Help%20System/GSTARCAD/2026/Index.md) → [System Variables](Help%20System/GSTARCAD/2026/System%20Variables/(System%20Variables).md) → [U](Help%20System/GSTARCAD/2026/System%20Variables/U/(U).md) ## Function Description: The UCSDETECT system variable is used to control whether dynamic UCS acquisition is active or not. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | ## System Variable Value: **0:**not active **1:**active --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables/UCSDETECT.html) · © Gstarsoft Co., Ltd.