# 3DCONVERSIONMODE System Variable [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [3D](Help%20System/GSTARCAD/2021/System%20Variables/3D/(3D).md) ## Function Description: The 3DCONVERSIONMODE system variable is used to convert materials and light definition into current product version. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 1 | | Range | 0,1,2 | ## System Variable Value: **0:** it will not convert the materials and light when opening a drawing **1:** it will automatically convert the materials and light **2:** it prompts users to convert any materials and light --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable.md)