[wilianmaique]

Originally Posted by <VeCo> no, light is baked into the bsp

I understand, so the only method is: TE_DLIGHT?

not even using reapi etc?

[<VeCo>]

You can set effect flag to an entity, like EF_BRIGHTLIGHT or EF_DIMLIGHT. These should be more reliable than sending messages as they are handled by the client, but aren't customizable at all.