animation time does not work.

[wann2]

slideUp = new SlideUpBuilder(slideUp_msgList) .withListeners(new SlideUp.Listener.Events() { @Override public void onSlide(float percent) { et_comment.setText(""); }

                @Override
                public void onVisibilityChanged(int visibility) {
                    if (visibility == View.GONE) {
                        et_comment.setText("");
                    }
                }
            })
            .withSlideFromOtherView(slideUpRootView)
            .withStartGravity(Gravity.BOTTOM)
            .withLoggingEnabled(true)
            .withGesturesEnabled(true)
            .withStartState(SlideUp.State.HIDDEN)
            .withAutoSlideDuration(2000)
            .withSavedState(savedInstanceState)
            .build();

Animation time does not work properly. It shows up immediately. May I know how can i fix it?