# Is it possible to programmatically change the transparency/translucency (opacity) of a BREP and/or a MESH when publishing 3D PDF from PRC?

 1. [FAQ](/faq)
2. »
3. [PDF and PRC Questions](/faq/pdf-and-prc-questions)

Yes, you can use the function. Code:

```
OdPrcCategory1LineStyle::setTransparency (OdInt8 transparency);
```

for the LineStyle of the corresponding object.