# CONSTRAINTSOLVEMODE System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) → [C](Help%20System/GSTARCAD/2027/System%20Variables/C/(C).md) ## Function Description: The CONSTRAINTSOLVEMODE system variable is used to control constrain actions when applying or editing constrains. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | ## System Variable Value: **0:** not to keep the size of geometric drawing when applying or modifying constrains **1:** keep the size of geometric drawing when applying or modifying constrains When CONSTRAINTSOLVEMODE system variable has set to be 0, the constrained lines may lead to unpredictable result. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables_Cgsv/CONSTRAINTSOLVEMODE.html) · © Gstarsoft Co., Ltd.