Lately I've been trying to make the Stereo controllers work in the Dota 2 workshop tools as an experiement ( Source 2 ). Besides that there is no official support for Wrinklemaps / eye controllers (or dmxedit in general), there is the functionality for stereo flexes / correctives / control groups.

I couldn't find any documentation about the "Morph Target Weights"[i.imgur.com] either.

( COMBO() is the corrective shapes, NWAY() seems to take care of the _multi shapes, but no information about 2WAY_0, or 2WAY_1, these are generally not documented at all? )

So I tried to export the model from Blender with Advanced Flex Properties
( Controller source: saxton_head_stereotest_controller.dmx )

However it seems the left_ side of the controller doesn't work. I want to belive this is an error with the Engine itself, I'd still like to report it here just in case it is an issue with the export.

Illustration of the issue.[i.imgur.com]

Source 2 seems to build these morph rules automatically, there is no issue with the HWM face functionality (Correctives are working really well!), only the Stereo control seems to not work. I haven't found any Dota 2 models with Stereo controls so I couldn't give any reference from the game itself.

The DMX files I used[sta.sh] (Exported with latest Dota 2 binaries: D:\Steam\SteamApps\common\dota 2 beta\game\bin\win64\)

Any help in this matter would be heavily appriciated, either if It's an engine error, or the way I complied the model I really want to find a way to make this work, because creating left_ right_ flexes for each shape manually would be very tedious.