This setup works on R20 but somehow in R21 it isn't. Seems like Vertex Weight tag isn't working properly or am I doing something wrong?
Good morning OrcunAkman, thanks for reaching out us.
With regard to the issue, being it not connected with Cinema APIs, we warmly suggest to reach the Cinema 4D support page.
Did it as you said.
They've just answered. It's a know bug they said.