Liquid not visible in velocity element

[jp3d81]

Hi ,
i have a simple,. Liquid is falling on an object.
I want to render out the velocity render element. But the liquid is not visible in the channel.

Velocity output is checked for the simulation.

[georgi.zhekov]

Hello,

Make sure you have velocity enabled for the Grid as well - there are two velocity check boxes.

[jp3d81]

Yes, had it checked. It seamed to be the vray blend mat. When i use the standart vraymat only, it is working.