@cmykversusrgb / Jonathan -
In that JS function, include the code below:
if (event['hypeGesturePhase'] == hypeDocument.kHypeGesturePhaseEnd)
hypeDocument.showSceneNamed(sceneName, optionalTransition, optionalDuration);
This basically means, when the drag event ends (that is, when the slider is released), go to a new scene.
Hope that helps... ~ John