Joint.connectedBody
var connectedBody: Rigidbody;
Description

A reference to another rigidbody this joint connects to.

If not set, the joint connects the object to the world.
	// Connects the joint to the world instead of another rigidbody
	hingeJoint.connectedBody = null;
	
	// Connects the joint to another body
	var otherBody : Rigidbody;
	hingeJoint.connectedBody = otherBody;