Rigging a character with BendOp, I’ve noticed that unlke other packages, Softimage Bend’s Angle is not tied with Radius.
I like it that way, but for this task I needed it to be tied. Here’s a fix with ICE.

Found at: http://si-community.com/community/viewtopic.php?f=15&t=5151
The compound is a very simplistic implementation that will need tweaking to work in situations different than the video. It is thought to just point out the name of the operator, like “cube.polymesh.bendop” into the BendOp_Name input, and use the Angle in the BendOp to animate the deform.