# 3DCONVERSIONMODE System Variable [GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [System Variables](Help%20System/GSTARCAD/2020/System%20Variables/(System%20Variables).md) → [3D](Help%20System/GSTARCAD/2020/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--fcb11827c31a.md) · [GstarCAD 2017](../../../2017/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable--fcb11827c31a.md) · [GstarCAD 2018](../../../2018/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable--fcb11827c31a.md) · [GstarCAD 2019](../../../2019/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable--fcb11827c31a.md) · [GstarCAD 2021](../../../2021/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable--fcb11827c31a.md) · [GstarCAD 2022](../../../2022/System%20Variables/3D/3DCONVERSIONMODE%20System%20Variable--fcb11827c31a.md)