# LAYEREVAL System Variable [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [System Variables](Help%20System/GSTARCAD/2022/System%20Variables/(System%20Variables).md) → [L](Help%20System/GSTARCAD/2022/System%20Variables/L/(L).md) ## Function Description: The LAYEREVAL system variable is used to control whether to evaluate the layer list for new layers when added to the drawing or to attached xrefs. | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | 0 | | Range | 0,1,2 | ## System Variable Value: **0:** off **1:** detect when to add new layers of xrefs to the drawing **2:** detect when to add new layers to the drawing and xrefs **Note:** if specified the LAYEREVALCTL system variable to be 0, the settings of LAYEREVAL and LAYERNOTIFY will be ignored. ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/L/LAYEREVAL%20System%20Variable.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/L/LAYEREVAL%20System%20Variable.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/System%20Variables/L/LAYEREVAL%20System%20Variable.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/L/LAYEREVAL%20System%20Variable.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/System%20Variables/L/LAYEREVAL%20System%20Variable.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/System%20Variables/L/LAYEREVAL%20System%20Variable.md)