Switching Two transform

Hi, please help me.
I have two transform that I want to switch using tween value.
I wanted to switch between two transform using tween value so there will be smooth animation upon switching. But I dont know how..

here is my initial code

// -----JS CODE-----

// @input SceneObject mainCam

// @input SceneObject worldTracking

// @input SceneObject animationTracking

script.api.myPercentageHandler = 0

var updateEvent = script.createEvent("UpdateEvent")

updateEvent.bind(function(){

var myWorldTracking = script.worldTracking.getTransform()

var myAnimationTracking = script.animationTracking.getTransform()

var myNewPos = ((myWorldTracking - myAnimationTracking) * script.api.myPercentageHandler) + myWorldTracking

script.mainCam.getTransform().setWorldTransform(myNewPos);

})

Hope you can help me. Thanks!