Scatter not working with render mask sets

[seandunderdale]

Hi. I tried adding some vray scatter nodes to a Maya set, and then using that set in the render mask mode (with it set to object set). I got weird alpha results, almost like I was using a matte shadow. I tried adding everything related to the scatter nodes into the maya set also, but it did not fix the result. Also, on a seperate note, is it possible to have Object IDs assigned to scatter groups? Or is this something that would carry through from the source assets? Personally Id like the option to assign group IDs to each scatter node and have them come out in multi mattes if possible.

[hermit.crab]

To make it work, you should put the scattered objects themselves in the Render Mask Set. Regarding the ObjectIDs - no, there are no additional object ID attributes for the scatter nodes or sets, again - you could assign object IDs to the scattered objects.