VR Plane to Sphere effect - Please enable negative stereo disparity values

The VR Plane to Sphere effect assumes that stereo convergence is at infinity. Depending on the shot, this may be incorrect and limits where new layers can be positioned in the stereo field.

The VR The Stereo Disparity control currently goes from 0.00 (convergence) to 45.00. It does not allow for negative values and does not allow stereo objects to be set behind convergence. The slider should be set up with 0 in the center and allow for -45 and +45 like this:

-45.00-------0.00-----45.00

Please make this change to the effect. It should be a trivially easy fix and it would make the effect way more useful for those of us doing stereo 360 work. Thanks!