Just like the title says, I would like to try to change the duration of a tween after it starts.

I'm trying to accomplish a zoom out mechanic at one speed, and using the same tween have it zoom back to the original position at a slower rate.

            if (boost > 0.0f)
            {
                isForwardBoosting = true;
                forwardBoostTween.SetEase(forwardBoostEase)
                                 .PlayForward();
            }
            else if (transform.position.z > initialPositionZ)
            {
                forwardBoostTween.SetEase(forwardBoostEase)
                                 .PlayBackwards();
            }
            else
            {
                isForwardBoosting = false;
            }

I've already tried using ChangeValues, with a hard coded incredibly long new duration for testing, but nothing seems to happen.  I assume this is because the duration cannot be changed after it is started?

Any advice on a way to accomplish this would be great, thanks!