What is the geometry parameter to allow for the barn door geometry to 'shaper rotation' around the beam of light like the provided Arri conventional fixtures. I see the parameter appear as a control for the ARRI, with the control name, 'shaper rotation'. I've tried all combinations, but I can't get the proper 'name' for the control. It's listed at the bottom of the Fixture Type's visualization chart, but has no corresponding listing in the MA3D 'parameter' guide?? I can get the barndoors parented to to the 'clamp' parameter as well as the global 'rotate', but neither control in the MA3D interface has the correct name of 'Rotation Shaper' like the Arri fixture.
What is the magic 'naming convention' for this visualization?
Thanks.